Summer Days is an alternate universe prequel to the game School Days, set in the summer holidays just prior to the timeline of School Days. All the original characters are present, except it assumes that they all first meet during the summer holidays as opposed to during the first year of school. Although Kotonoha and Sekai, the heroines of the first game, are both present, the main heroine is Setsuna. [From Wikipedia]
Summer Days has not appeared in our Steam sample enough to calculate it's similar novels... sorry!
A novel needs atleast 20 owners before it's similarity is calculated.
| Name | Characters | Importance | Weight |
|---|---|---|---|
| Tenth Grader Role | 7 | 2.19 | 4.54 |
| Sleeveless Dress Clothes | 4 | 2.38 | 3.84 |
| Waitstaff Uniform Clothes | 5 | 2.06 | 3.69 |
| Loafers Clothes | 7 | 1.71 | 3.56 |
| Mobile Phone Items | 6 | 1.73 | 3.37 |
| Blouse Clothes | 9 | 1.46 | 3.37 |
| Watashi Personality | 13 | 1.25 | 3.30 |
| Waitstaff Role | 5 | 1.82 | 3.26 |
| Nymphomania Subject of | 3 | 2.31 | 3.21 |
| Sex on Roof Engages in (Sexual) | 3 | 2.29 | 3.18 |
| Bathrobe Clothes | 2 | 2.77 | 3.04 |
| Jealous Personality | 4 | 1.87 | 3.02 |
| Dancing Engages in | 3 | 2.16 | 3.00 |
| Voyeurism Engages in (Sexual) | 3 | 2.14 | 2.96 |
| Tareme Eyes | 13 | 1.11 | 2.92 |
| Daughter Role | 6 | 1.46 | 2.83 |
| Teasing Engages in | 6 | 1.44 | 2.81 |
| Full Sister Role | 5 | 1.56 | 2.80 |
| Single Parent Role | 2 | 2.51 | 2.75 |
| Backpack Items | 2 | 2.50 | 2.74 |
| Coat Clothes | 4 | 1.70 | 2.74 |
| Pleated Skirt Clothes | 6 | 1.40 | 2.71 |
| Voyeurism Subject of (Sexual) | 3 | 1.95 | 2.71 |
| Casual Sex Engages in (Sexual) | 2 | 2.45 | 2.69 |
| Small Breasts Body | 4 | 1.65 | 2.66 |
| Part-time Worker Role | 3 | 1.90 | 2.63 |
| Straight Hair | 15 | 0.94 | 2.62 |
| Student Council Member Role | 2 | 2.37 | 2.60 |
| Pubic Hair Hair | 6 | 1.34 | 2.60 |
| Classmate Role | 7 | 1.23 | 2.56 |
| Curtained Hair | 6 | 1.30 | 2.53 |
| Rubber Band With Beads Clothes | 2 | 2.23 | 2.45 |
| Sex in Front of an Audience Engages in (Sexual) | 4 | 1.50 | 2.42 |
| French Kiss Engages in (Sexual) | 4 | 1.48 | 2.38 |
| Friend Role | 6 | 1.20 | 2.34 |
| Miniskirt Clothes | 8 | 1.06 | 2.34 |
| Younger Sister Role | 4 | 1.45 | 2.33 |
| Protective Personality | 3 | 1.67 | 2.32 |
| Parted to Side Hair | 8 | 1.05 | 2.31 |
| Wealthy Role | 3 | 1.66 | 2.30 |
| No Bangs Hair | 3 | 1.65 | 2.29 |
| Not a Virgin Role | 4 | 1.41 | 2.28 |
| Blunt Bangs Hair | 4 | 1.40 | 2.25 |
| Shopping Engages in | 2 | 2.04 | 2.25 |
| Ribbon Tie Clothes | 5 | 1.25 | 2.24 |
| Shy Personality | 3 | 1.62 | 2.24 |
| Hazel Eyes | 2 | 2.04 | 2.24 |
| Sex in a Vehicle Engages in (Sexual) | 2 | 2.03 | 2.23 |
| Spiky Bangs Hair | 8 | 1.00 | 2.19 |
| Sex with Others Engages in (Sexual) | 2 | 1.99 | 2.19 |
| Missionary Subject of (Sexual) | 6 | 1.12 | 2.17 |
| Thigh-high Stockings Clothes | 7 | 1.04 | 2.17 |
| Hip Scarf Clothes | 1 | 3.13 | 2.17 |
| Selfish Personality | 2 | 1.96 | 2.15 |
| Pixie Cut Hair | 1 | 3.10 | 2.15 |
| Drummer Role | 1 | 3.10 | 2.15 |
| Ojousama Role | 2 | 1.95 | 2.14 |
| Kind Personality | 7 | 1.03 | 2.13 |
| Mutual Masturbation Engages in (Sexual) | 2 | 1.94 | 2.13 |
| Nekomimi Headband Clothes | 1 | 3.05 | 2.12 |
| Coworker Role | 2 | 1.92 | 2.11 |
| Energetic Personality | 3 | 1.52 | 2.11 |
| Atashi Personality | 2 | 1.90 | 2.09 |
| Cunnilingus Subject of (Sexual) | 5 | 1.16 | 2.08 |
| Sitting Sex Subject of (Sexual) | 6 | 1.06 | 2.07 |
| Cufflink Clothes | 1 | 2.96 | 2.05 |
| Twin Sister Role | 2 | 1.85 | 2.04 |
| Romantically Indecisive Personality | 1 | 2.92 | 2.03 |
| Mother Role | 3 | 1.46 | 2.02 |
| Spiky Bun Hair | 1 | 2.92 | 2.02 |
| Big Breasts Body | 5 | 1.13 | 2.02 |
| Bob Cut Hair | 2 | 1.82 | 2.00 |
| Androphobia Subject of | 1 | 2.87 | 1.99 |
| Flirting Engages in | 2 | 1.79 | 1.97 |
| School Basketball Club Member Role | 1 | 2.83 | 1.96 |
| Virgin Sex Engages in (Sexual) | 9 | 0.85 | 1.96 |
| V Bangs Hair | 3 | 1.41 | 1.96 |
| Naked (Not Sexually Involved) Engages in (Sexual) | 1 | 2.82 | 1.96 |
| Coercion Subject of | 1 | 2.82 | 1.96 |
| Scarf Clothes | 2 | 1.78 | 1.95 |
| Skipping School Engages in | 1 | 2.78 | 1.93 |
| Pajamas Clothes | 2 | 1.75 | 1.92 |
| Tsurime Eyes | 3 | 1.38 | 1.92 |
| Nipple Sucking Subject of (Sexual) | 3 | 1.38 | 1.91 |
| Kid Body | 3 | 1.37 | 1.90 |
| Older Brother Role | 2 | 1.73 | 1.90 |
| Outgoing Personality | 2 | 1.72 | 1.89 |
| Sports Shoes Clothes | 2 | 1.72 | 1.89 |
| Cowgirl Engages in (Sexual) | 2 | 1.71 | 1.88 |
| Reserved Personality | 2 | 1.71 | 1.88 |
| Violet Eyes | 5 | 1.05 | 1.88 |
| Huge Breasts Body | 2 | 1.70 | 1.87 |
| Hoodie Clothes | 2 | 1.70 | 1.87 |
| Vaginal Masturbation Engages in (Sexual) | 2 | 1.67 | 1.84 |
| Ahoge Hair | 3 | 1.32 | 1.83 |
| Relaxed Personality | 2 | 1.64 | 1.80 |
| Doggy Style Subject of (Sexual) | 6 | 0.92 | 1.80 |
| Old-fashioned Personality | 1 | 2.58 | 1.79 |
| Moody Personality | 1 | 2.56 | 1.77 |
| Hair Loopies Hair | 1 | 2.53 | 1.75 |
| Asymmetrical Sidehair Hair | 1 | 2.52 | 1.75 |
| Runaway Role | 1 | 2.52 | 1.75 |
| Basketball Engages in | 1 | 2.52 | 1.75 |
| Sex in Public Places Engages in (Sexual) | 3 | 1.26 | 1.75 |
| Sixty-nine Engages in (Sexual) | 3 | 1.26 | 1.75 |
| Puffy Personality | 1 | 2.52 | 1.74 |
| Money Lover Personality | 1 | 2.51 | 1.74 |
| Middle Sister Role | 1 | 2.51 | 1.74 |
| Vaginal Fingering Subject of (Sexual) | 4 | 1.08 | 1.73 |
| Tail Clothes | 1 | 2.47 | 1.72 |
| Older Sister Role | 2 | 1.56 | 1.71 |
| Cunnilingus Engages in (Sexual) | 2 | 1.55 | 1.70 |
| Donkan Personality | 1 | 2.45 | 1.70 |
| Masturbation with Object Engages in (Sexual) | 1 | 2.45 | 1.70 |
| Friendly Personality | 3 | 1.22 | 1.69 |
| Makeup Body | 2 | 1.53 | 1.68 |
| Black Hair | 7 | 0.81 | 1.68 |
| Blowjob Subject of (Sexual) | 2 | 1.52 | 1.67 |
| Slim Body | 17 | 0.58 | 1.67 |
| Medium Breasts Body | 2 | 1.51 | 1.66 |
| Ribbon Hair Tie Clothes | 3 | 1.19 | 1.65 |
| Necklace Clothes | 2 | 1.50 | 1.65 |
| Swim Shorts Clothes | 1 | 2.37 | 1.64 |
| Sarcasm Engages in | 1 | 2.37 | 1.64 |
| Dishonest Personality | 1 | 2.32 | 1.61 |
| Outdoor Sex Engages in (Sexual) | 3 | 1.16 | 1.60 |
| Smart Personality | 2 | 1.46 | 1.60 |
| Bikini Clothes | 2 | 1.46 | 1.60 |
| Flower Clothes | 1 | 2.30 | 1.59 |
| Headband Clothes | 2 | 1.45 | 1.59 |
| Twin Blowjob Engages in (Sexual) | 2 | 1.45 | 1.59 |
| Class President Role | 1 | 2.28 | 1.58 |
| Sidehair Hair | 4 | 0.98 | 1.58 |
| Brown Hair | 9 | 0.68 | 1.58 |
| Twin Tails Hair | 3 | 1.13 | 1.57 |
| Name Tag Clothes | 1 | 2.26 | 1.57 |
| Whimsical Personality | 1 | 2.26 | 1.56 |
| Bullying Engages in | 1 | 2.25 | 1.56 |
| Earrings Clothes | 2 | 1.42 | 1.56 |
| Cooking Engages in | 2 | 1.42 | 1.56 |
| Jacket Clothes | 2 | 1.42 | 1.56 |
| Tank Top Clothes | 2 | 1.41 | 1.55 |
| Ambitious Personality | 1 | 2.21 | 1.53 |
| Public Masturbation Engages in (Sexual) | 1 | 2.21 | 1.53 |
| Spats Clothes | 1 | 2.20 | 1.53 |
| Bathroom Sex Engages in (Sexual) | 2 | 1.39 | 1.52 |
| Promiscuous Personality | 1 | 2.19 | 1.52 |
| Seduction Engages in | 1 | 2.17 | 1.51 |
| Hosome Eyes | 2 | 1.37 | 1.51 |
| Quickie Fix Subject of (Sexual) | 3 | 1.08 | 1.50 |
| Charismatic Personality | 1 | 2.16 | 1.50 |
| Bookworm Personality | 1 | 2.16 | 1.50 |
| Teal Hair | 1 | 2.16 | 1.50 |
| Talkative Personality | 1 | 2.16 | 1.50 |
| Wavy Hair | 2 | 1.36 | 1.49 |
| Tominagi Subject of (Sexual) | 2 | 1.36 | 1.49 |
| Condom Sex Engages in (Sexual) | 1 | 2.14 | 1.49 |
| Shimapan Clothes | 1 | 2.14 | 1.48 |
| Blowjob Engages in (Sexual) | 6 | 0.76 | 1.48 |
| Adult Body | 2 | 1.34 | 1.47 |
| School Uniform Clothes | 6 | 0.76 | 1.47 |
| Management Role | 1 | 2.12 | 1.47 |
| Book Items | 1 | 2.12 | 1.47 |
| Third Person Personality | 1 | 2.11 | 1.47 |
| Tominagi Engages in (Sexual) | 1 | 2.11 | 1.46 |
| Court Shoes Clothes | 1 | 2.10 | 1.46 |
| Brown Eyes | 4 | 0.90 | 1.45 |
| Flat Chest Body | 1 | 2.08 | 1.44 |
| T-shirt Clothes | 2 | 1.31 | 1.44 |
| Brother Complex Personality | 1 | 2.06 | 1.43 |
| Bullying Subject of | 1 | 2.06 | 1.43 |
| Corset Clothes | 1 | 2.06 | 1.42 |
| Teen Body | 9 | 0.62 | 1.42 |
| Docile Personality | 1 | 2.04 | 1.42 |
| Kemonomimi Headband Clothes | 1 | 2.04 | 1.42 |
| Tall Body | 1 | 2.04 | 1.42 |
| Reading Engages in | 1 | 2.04 | 1.41 |
| Cuffs Clothes | 1 | 2.03 | 1.41 |
| Butterfly Engages in (Sexual) | 1 | 2.02 | 1.40 |
| Ankle Socks Clothes | 1 | 2.01 | 1.40 |
| Emotional Personality | 1 | 2.01 | 1.40 |
| Sunglasses Clothes | 1 | 2.00 | 1.39 |
| Yamato Nadeshiko Role | 1 | 2.00 | 1.38 |
| Childhood Friend Role | 2 | 1.26 | 1.38 |
| Gamer Role | 1 | 1.98 | 1.37 |
| Tomboy Personality | 1 | 1.96 | 1.36 |
| Full Brother Role | 1 | 1.95 | 1.35 |
| Long Hair | 5 | 0.75 | 1.35 |
| Ring Clothes | 1 | 1.94 | 1.34 |
| Immature Personality | 1 | 1.93 | 1.34 |
| Sandals Clothes | 1 | 1.93 | 1.34 |
| Curious Personality | 1 | 1.92 | 1.33 |
| Slicked Back Hair | 1 | 1.91 | 1.32 |
| Cowgirl Subject of (Sexual) | 3 | 0.95 | 1.32 |
| Masturbation in front of an Audience Engages in (Sexual) | 1 | 1.90 | 1.32 |
| Blazer School Uniform Clothes | 1 | 1.90 | 1.32 |
| Low Self-esteem Personality | 1 | 1.90 | 1.31 |
| Red Eyes | 2 | 1.20 | 1.31 |
| Quickie Fix Engages in (Sexual) | 1 | 1.88 | 1.30 |
| Fang Body | 1 | 1.88 | 1.30 |
| Cardigan Clothes | 1 | 1.87 | 1.30 |
| Standing Sex Engages in (Sexual) | 1 | 1.87 | 1.29 |
| Timid Personality | 1 | 1.86 | 1.29 |
| Standing Sex Subject of (Sexual) | 2 | 1.18 | 1.29 |
| Boobjob Subject of (Sexual) | 1 | 1.86 | 1.29 |
| Butterfly Subject of (Sexual) | 2 | 1.17 | 1.29 |
| Group Sex of One Male and Several Females Engages in (Sexual) | 2 | 1.17 | 1.29 |
| Yukata Clothes | 1 | 1.85 | 1.28 |
| Short-tempered Personality | 1 | 1.85 | 1.28 |
| Shoulder-length Hair | 3 | 0.92 | 1.27 |
| Blunt Personality | 1 | 1.83 | 1.27 |
| Strict Personality | 1 | 1.83 | 1.27 |
| Sitting Sex Engages in (Sexual) | 1 | 1.82 | 1.26 |
| Younger Appearance Body | 1 | 1.82 | 1.26 |
| Pretending Personality | 1 | 1.82 | 1.26 |
| Son Role | 1 | 1.82 | 1.26 |
| Mature Personality | 1 | 1.81 | 1.26 |
| Infidelity Engages in | 1 | 1.80 | 1.25 |
| Necktie Clothes | 2 | 1.12 | 1.23 |
| Young-adult Body | 4 | 0.76 | 1.22 |
| Anal Sex Engages in (Sexual) | 1 | 1.76 | 1.22 |
| Handjob Subject of (Sexual) | 1 | 1.75 | 1.22 |
| Deredere Personality | 1 | 1.74 | 1.21 |
| Missionary Engages in (Sexual) | 1 | 1.74 | 1.21 |
| Ponytail Hair | 2 | 1.10 | 1.21 |
| Cheerful Personality | 1 | 1.74 | 1.20 |
| Formal Shirt Clothes | 1 | 1.73 | 1.20 |
| Glasses Clothes | 2 | 1.08 | 1.19 |
| Panties Clothes | 1 | 1.71 | 1.19 |
| Short Hair | 6 | 0.61 | 1.18 |
| Stoic Personality | 1 | 1.70 | 1.18 |
| Nipple Sucking Engages in (Sexual) | 1 | 1.70 | 1.18 |
| Naive Personality | 1 | 1.69 | 1.17 |
| Doggy Style Engages in (Sexual) | 1 | 1.68 | 1.17 |
| Carefree Personality | 1 | 1.68 | 1.17 |
| Stubborn Personality | 1 | 1.68 | 1.16 |
| Ribbon Hair Accessory Clothes | 1 | 1.66 | 1.15 |
| Teasing Subject of | 1 | 1.64 | 1.14 |
| Popular Role | 1 | 1.64 | 1.13 |
| Sweater Clothes | 1 | 1.63 | 1.13 |
| Pervert Personality | 1 | 1.63 | 1.13 |
| Pink Eyes | 1 | 1.62 | 1.12 |
| Vaginal Fingering Engages in (Sexual) | 1 | 1.61 | 1.12 |
| University Student Role | 1 | 1.59 | 1.10 |
| Clothing with Ribbons Clothes | 1 | 1.58 | 1.10 |
| Ore Personality | 1 | 1.58 | 1.09 |
| Pale Body | 18 | 0.37 | 1.08 |
| Bracelet Clothes | 1 | 1.56 | 1.08 |
| Jeans Clothes | 1 | 1.55 | 1.08 |
| Refined Personality | 1 | 1.54 | 1.07 |
| Hard Worker Personality | 1 | 1.54 | 1.07 |
| Wife Role | 1 | 1.53 | 1.06 |
| Pendant Necklace Clothes | 1 | 1.52 | 1.05 |
| Serious Personality | 1 | 1.49 | 1.03 |
| Incest Engages in (Sexual) | 1 | 1.47 | 1.02 |
| Seventh Posture Subject of (Sexual) | 1 | 1.46 | 1.01 |
| Black Eyes | 1 | 1.42 | 0.98 |
| Hair Tie Clothes | 1 | 1.41 | 0.98 |
| Hairpin Clothes | 1 | 1.40 | 0.97 |
| Masturbation Engages in (Sexual) | 1 | 1.40 | 0.97 |
| Knee-high Socks Clothes | 1 | 1.38 | 0.96 |
| Lesbian Sex Engages in (Sexual) | 1 | 1.38 | 0.96 |
| Blue Eyes | 2 | 0.80 | 0.88 |
| Belt Clothes | 1 | 1.27 | 0.88 |
| Dress Clothes | 1 | 1.25 | 0.87 |
| Violet Hair | 1 | 1.20 | 0.83 |
| Anal Sex Subject of (Sexual) | 1 | 1.19 | 0.82 |
| Trousers Clothes | 1 | 1.19 | 0.82 |
| Handjob Engages in (Sexual) | 1 | 1.16 | 0.80 |
| Boobjob Engages in (Sexual) | 1 | 1.07 | 0.74 |
| Green Eyes | 1 | 1.02 | 0.71 |
| Waist Length+ Hair | 1 | 0.81 | 0.56 |