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 | 4.02 |
| Amnesiac Protagonist | 2.00 | 1.87 | 3.75 |
| Protagonist's Non-blood-related Sister as a Heroine | 2.00 | 1.74 | 3.48 |
| Imouto-type Heroine | 2.00 | 1.73 | 3.45 |
| Protagonist's Kouhai as a Heroine | 2.00 | 1.65 | 3.30 |
| Maid Heroine | 2.00 | 1.52 | 3.05 |
| Loli Heroine | 2.00 | 1.17 | 2.35 |
| Heroine with Glasses | 2.00 | 1.11 | 2.21 |
| Straight Lolicon | 1.00 | 1.49 | 1.49 |
| Sexual Content | 2.00 | 0.61 | 1.23 |
| Male Protagonist | 2.00 | 0.30 | 0.60 |
| Name | Characters | Importance | Weight |
|---|---|---|---|
| Robot Role | 2 | 2.20 | 2.42 |
| Beret Clothes | 2 | 1.98 | 2.17 |
| One Piece Swimsuit Clothes | 2 | 1.91 | 2.10 |
| Maid Role | 2 | 1.85 | 2.03 |
| Maid's Dress Clothes | 2 | 1.51 | 1.66 |
| Sailor School Uniform Clothes | 2 | 1.48 | 1.63 |
| Missionary Subject of (Sexual) | 3 | 1.11 | 1.54 |
| Tominagi Subject of (Sexual) | 2 | 1.36 | 1.49 |
| Claret Hair | 1 | 2.15 | 1.49 |
| Sundress Clothes | 1 | 2.13 | 1.48 |
| Shimapan Clothes | 1 | 2.12 | 1.47 |
| Towel Clothes | 1 | 2.02 | 1.40 |
| Small Breast Sizes Body | 1 | 1.96 | 1.36 |
| Shoulder-length Hair | 3 | 0.91 | 1.27 |
| String Ribbon Tie Clothes | 1 | 1.81 | 1.26 |
| Pajamas Clothes | 1 | 1.75 | 1.21 |
| Skirt Suit Clothes | 1 | 1.74 | 1.21 |
| Crop Top Clothes | 1 | 1.69 | 1.17 |
| Sitting Sex Subject of (Sexual) | 2 | 1.06 | 1.16 |
| Garnet Eyes | 1 | 1.65 | 1.14 |
| Maid's Headdress Clothes | 1 | 1.62 | 1.12 |
| Garter Belt Stockings Clothes | 1 | 1.61 | 1.11 |
| Pendant Necklace Clothes | 1 | 1.53 | 1.06 |
| Choker Clothes | 1 | 1.51 | 1.05 |
| Cowgirl Subject of (Sexual) | 2 | 0.95 | 1.05 |
| Orange Hair | 1 | 1.51 | 1.04 |
| Bikini Clothes | 1 | 1.46 | 1.01 |
| Doggy Style Subject of (Sexual) | 2 | 0.92 | 1.01 |
| Headband Clothes | 1 | 1.44 | 1.00 |
| Brown Eyes | 2 | 0.90 | 0.99 |
| Earrings Clothes | 1 | 1.42 | 0.98 |
| Cooking Engages in | 1 | 1.41 | 0.98 |
| Blond Hair | 2 | 0.88 | 0.97 |
| Knee-high Socks Clothes | 1 | 1.37 | 0.95 |
| Skirt Clothes | 1 | 1.33 | 0.92 |
| T-shirt Clothes | 1 | 1.32 | 0.91 |
| Ahoge Hair | 1 | 1.31 | 0.91 |
| Blue Eyes | 2 | 0.80 | 0.88 |
| Dress Clothes | 1 | 1.24 | 0.86 |
| Blowjob Engages in (Sexual) | 2 | 0.76 | 0.84 |
| Long Hair | 2 | 0.75 | 0.83 |
| Red Eyes | 1 | 1.19 | 0.83 |
| Ribbon Hair Tie Clothes | 1 | 1.18 | 0.82 |
| Butterfly Subject of (Sexual) | 1 | 1.17 | 0.81 |
| School Uniform Clothes | 2 | 0.74 | 0.81 |
| Handjob Engages in (Sexual) | 1 | 1.16 | 0.80 |
| Twin Tails Hair | 1 | 1.12 | 0.78 |
| Glasses Clothes | 1 | 1.08 | 0.75 |
| Vaginal Fingering Subject of (Sexual) | 1 | 1.08 | 0.75 |
| Brown Hair | 2 | 0.68 | 0.75 |
| Parted to Side Hair | 1 | 1.07 | 0.74 |
| Thigh-high Stockings Clothes | 1 | 1.03 | 0.72 |
| Green Eyes | 1 | 1.01 | 0.70 |
| Black Hair | 1 | 0.81 | 0.56 |
| Waist Length+ Hair | 1 | 0.80 | 0.55 |
| Short Hair | 1 | 0.61 | 0.42 |