Following the death of their parents, Akira made it a solemn duty to ensure his sister could live a normal existence, doing everything within his power to bring happiness into their inconstant lives. As Akira’s bond to Aya inevitably grew closer, others began to jealously whisper how the siblings were forging a relationship that went beyond the accepted conventions of brother and sister; allegations neither showed particular concern towards. Yet this idyllic innocence was not meant to last, and the devotion between Aya and Akira would be sorely tested by an incomprehensible world they never knew existed – a reality that threatens to smother both in malicious darkness. [From Eroge Review]
Zaishuu -The Sin- 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 |
|---|---|---|---|
| Ushanka Clothes | 1 | 3.46 | 2.40 |
| Monster Hunter Role | 1 | 3.31 | 2.30 |
| Smoking Engages in | 2 | 2.05 | 2.25 |
| Beret Clothes | 2 | 1.98 | 2.17 |
| Video Camera Items | 1 | 3.11 | 2.15 |
| Waitstaff Role | 2 | 1.81 | 1.99 |
| Off-The-Shoulder Sweater Clothes | 1 | 2.73 | 1.90 |
| Coat Clothes | 2 | 1.70 | 1.87 |
| Dual-Wield Weapon Items | 1 | 2.69 | 1.86 |
| Drawing Engages in | 1 | 2.47 | 1.71 |
| Kemonomimi Hair | 1 | 2.47 | 1.71 |
| Vaginal + Anal Tentacle Penetration Subject of (Sexual) | 1 | 2.45 | 1.70 |
| Big Breasts Body | 3 | 1.19 | 1.64 |
| Non-human Role | 1 | 2.31 | 1.60 |
| Heterochromia Eyes | 1 | 2.26 | 1.57 |
| Twin Handjob Engages in (Sexual) | 1 | 2.22 | 1.54 |
| Hairpin Clothes | 2 | 1.39 | 1.53 |
| Superhuman Role | 1 | 2.21 | 1.53 |
| Chinese Dress Clothes | 1 | 2.20 | 1.52 |
| Spats Clothes | 1 | 2.19 | 1.52 |
| Swordsmanship Engages in | 1 | 2.15 | 1.49 |
| Hidden Vibrator Subject of (Sexual) | 1 | 2.11 | 1.47 |
| Flat Chest Body | 1 | 2.10 | 1.46 |
| Brother Complex Personality | 1 | 2.06 | 1.43 |
| Cross Necklace Clothes | 1 | 2.04 | 1.42 |
| Furry Tail Body | 1 | 2.03 | 1.40 |
| Cyan Hair | 1 | 2.02 | 1.40 |
| Virgin Sex Engages in (Sexual) | 4 | 0.84 | 1.36 |
| Gang Rape Subject of (Sexual) | 1 | 1.89 | 1.31 |
| Ribbon Hair Tie Clothes | 2 | 1.18 | 1.30 |
| Short Shorts Clothes | 1 | 1.79 | 1.24 |
| Braid Hair | 1 | 1.78 | 1.23 |
| Sword Items | 1 | 1.77 | 1.23 |
| Necktie Clothes | 2 | 1.11 | 1.22 |
| Older Brother Role | 1 | 1.72 | 1.20 |
| Quickie Fix Subject of (Sexual) | 2 | 1.08 | 1.18 |
| Small Breasts Body | 1 | 1.70 | 1.18 |
| Doggy Style Engages in (Sexual) | 1 | 1.70 | 1.18 |
| No Bangs Hair | 1 | 1.68 | 1.16 |
| Boots Clothes | 1 | 1.68 | 1.16 |
| Wealthy Role | 1 | 1.66 | 1.15 |
| Olive Body | 1 | 1.66 | 1.15 |
| Violet Eyes | 2 | 1.04 | 1.14 |
| Thigh-high Stockings Clothes | 2 | 1.03 | 1.14 |
| Mini-dress Clothes | 1 | 1.63 | 1.13 |
| Mole Body | 1 | 1.62 | 1.12 |
| Garter Belt Stockings Clothes | 1 | 1.61 | 1.11 |
| Waist Length+ Hair | 3 | 0.80 | 1.11 |
| Blue Eyes | 3 | 0.80 | 1.11 |
| Teacher Role | 1 | 1.55 | 1.07 |
| Cowgirl Subject of (Sexual) | 2 | 0.95 | 1.05 |
| School Uniform Clothes | 3 | 0.74 | 1.02 |
| Daughter Role | 1 | 1.47 | 1.02 |
| Seventh Posture Subject of (Sexual) | 1 | 1.45 | 1.01 |
| Shoulder-length Hair | 2 | 0.91 | 1.00 |
| Headband Clothes | 1 | 1.44 | 1.00 |
| Brown Eyes | 2 | 0.90 | 0.99 |
| Pantyhose Clothes | 1 | 1.42 | 0.98 |
| Gloves Clothes | 1 | 1.41 | 0.98 |
| Cooking Engages in | 1 | 1.41 | 0.98 |
| Bathroom Sex Engages in (Sexual) | 1 | 1.39 | 0.97 |
| Grey Hair | 1 | 1.39 | 0.96 |
| Masturbation Engages in (Sexual) | 1 | 1.37 | 0.95 |
| Kid Body | 1 | 1.36 | 0.94 |
| Bukkake Subject of (Sexual) | 1 | 1.34 | 0.93 |
| Red Hair | 1 | 1.32 | 0.92 |
| Fighting Engages in | 1 | 1.28 | 0.89 |
| Sixty-nine Engages in (Sexual) | 1 | 1.25 | 0.87 |
| Teen Body | 3 | 0.61 | 0.85 |
| Blue Hair | 1 | 1.19 | 0.82 |
| Butterfly Subject of (Sexual) | 1 | 1.17 | 0.81 |
| Twin Tails Hair | 1 | 1.12 | 0.78 |
| Missionary Subject of (Sexual) | 1 | 1.11 | 0.77 |
| Glasses Clothes | 1 | 1.08 | 0.75 |
| Vaginal Fingering Subject of (Sexual) | 1 | 1.08 | 0.75 |
| Miniskirt Clothes | 1 | 1.07 | 0.74 |
| Boobjob Engages in (Sexual) | 1 | 1.06 | 0.74 |
| Doggy Style Subject of (Sexual) | 1 | 0.92 | 0.64 |
| Blond Hair | 1 | 0.88 | 0.61 |
| Pale Body | 4 | 0.37 | 0.60 |
| Black Hair | 1 | 0.81 | 0.56 |
| Young-adult Body | 1 | 0.77 | 0.53 |
| Blowjob Engages in (Sexual) | 1 | 0.76 | 0.53 |
| Brown Hair | 1 | 0.68 | 0.47 |
| Slim Body | 1 | 0.57 | 0.40 |