Main character loses his memory in an accident. After being discharged from the hospital, he starts to live with his self-proclaimed sister. Hero regains his memory while in contact with her. And at some point the feelings of the two go beyond the scope of the brother and sister. However, their peaceful life gets interrupted when a girl from the rich family and a Maid Robo girl move in... [From vndbreview]
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Sister Angel 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 | Score | Importance | Weight |
|---|---|---|---|
| Robot Heroine | 2.00 | 2.01 | 4.01 |
| Amnesiac Protagonist | 2.00 | 1.85 | 3.69 |
| Protagonist's Non-blood-related Sister as a Heroine | 2.00 | 1.75 | 3.50 |
| Imouto-type Heroine | 2.00 | 1.75 | 3.49 |
| Protagonist's Kouhai as a Heroine | 2.00 | 1.67 | 3.33 |
| Maid Heroine | 2.00 | 1.53 | 3.06 |
| Loli Heroine | 2.00 | 1.19 | 2.38 |
| Heroine with Glasses | 2.00 | 1.11 | 2.22 |
| Straight Lolicon | 1.00 | 1.50 | 1.50 |
| Sexual Content | 2.00 | 0.63 | 1.26 |
| Male Protagonist | 2.00 | 0.30 | 0.60 |
| ADV | 2.00 | 0.14 | 0.29 |
| Name | Characters | Importance | Weight |
|---|---|---|---|
| Robot Role | 2 | 2.20 | 2.42 |
| Beret Clothes | 2 | 1.99 | 2.19 |
| One Piece Swimsuit Clothes | 2 | 1.92 | 2.11 |
| Maid Role | 2 | 1.84 | 2.02 |
| Maid's Dress Clothes | 2 | 1.51 | 1.66 |
| Sailor School Uniform Clothes | 2 | 1.48 | 1.62 |
| Missionary Subject of (Sexual) | 3 | 1.12 | 1.55 |
| Claret Hair | 1 | 2.16 | 1.49 |
| Tominagi Subject of (Sexual) | 2 | 1.36 | 1.49 |
| Sundress Clothes | 1 | 2.14 | 1.49 |
| Shimapan Clothes | 1 | 2.13 | 1.48 |
| Towel Clothes | 1 | 2.01 | 1.39 |
| Small Breast Sizes Body | 1 | 2.00 | 1.39 |
| Shoulder-length Hair | 3 | 0.92 | 1.27 |
| String Ribbon Tie Clothes | 1 | 1.82 | 1.26 |
| Pajamas Clothes | 1 | 1.75 | 1.21 |
| Skirt Suit Clothes | 1 | 1.74 | 1.21 |
| Sitting Sex Subject of (Sexual) | 2 | 1.06 | 1.17 |
| Crop Top Clothes | 1 | 1.66 | 1.15 |
| Garnet Eyes | 1 | 1.66 | 1.15 |
| Maid's Headdress Clothes | 1 | 1.62 | 1.13 |
| Garter Belt Stockings Clothes | 1 | 1.62 | 1.12 |
| Pendant Necklace Clothes | 1 | 1.52 | 1.05 |
| Cowgirl Subject of (Sexual) | 2 | 0.95 | 1.05 |
| Orange Hair | 1 | 1.51 | 1.05 |
| Choker Clothes | 1 | 1.50 | 1.04 |
| Doggy Style Subject of (Sexual) | 2 | 0.92 | 1.02 |
| Bikini Clothes | 1 | 1.46 | 1.01 |
| Headband Clothes | 1 | 1.45 | 1.01 |
| Brown Eyes | 2 | 0.90 | 0.99 |
| Earrings Clothes | 1 | 1.42 | 0.98 |
| Cooking Engages in | 1 | 1.42 | 0.98 |
| Blond Hair | 2 | 0.89 | 0.98 |
| Knee-high Socks Clothes | 1 | 1.38 | 0.96 |
| Skirt Clothes | 1 | 1.34 | 0.93 |
| Ahoge Hair | 1 | 1.32 | 0.92 |
| T-shirt Clothes | 1 | 1.31 | 0.91 |
| Blue Eyes | 2 | 0.80 | 0.88 |
| Dress Clothes | 1 | 1.25 | 0.87 |
| Blowjob Engages in (Sexual) | 2 | 0.76 | 0.84 |
| Red Eyes | 1 | 1.20 | 0.83 |
| School Uniform Clothes | 2 | 0.75 | 0.83 |
| Ribbon Hair Tie Clothes | 1 | 1.19 | 0.83 |
| Long Hair | 2 | 0.75 | 0.82 |
| Butterfly Subject of (Sexual) | 1 | 1.17 | 0.81 |
| Handjob Engages in (Sexual) | 1 | 1.16 | 0.80 |
| Twin Tails Hair | 1 | 1.13 | 0.78 |
| Brown Hair | 2 | 0.68 | 0.75 |
| Glasses Clothes | 1 | 1.08 | 0.75 |
| Vaginal Fingering Subject of (Sexual) | 1 | 1.08 | 0.75 |
| Parted to Side Hair | 1 | 1.05 | 0.73 |
| Thigh-high Stockings Clothes | 1 | 1.04 | 0.72 |
| Green Eyes | 1 | 1.02 | 0.70 |
| Waist Length+ Hair | 1 | 0.81 | 0.56 |
| Black Hair | 1 | 0.80 | 0.56 |
| Short Hair | 1 | 0.61 | 0.42 |