Urara is an ordinary student, living alone. He lives a boring life, and wants to get a girlfriend. He has two childhood friends, Maria and Arisa. Maria is older than him, but she is beautiful, smart and kind-hearted. Arisa is her younger sister. One night, he has a dream of an octopus staring at him, and says, "You've been singled out. You must choose someone to save the earth." When he wakes up, there are Maria and Arisa sitting in front of him in strange clothes. But they don't know why they come to his place. At that moment, a voice comes from above, and tells them that Urara has been singled out as a representative of humans, and Maria and Arisa have been chosen by Urara. His mission is to choose a partner, or everything will be destroyed.... Their strange cohabitation starts now.... [From ErogeShop]
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Trouble! Sister Room 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 |
|---|---|---|---|
| Extraterrestrial | 3.00 | 2.28 | 6.84 |
| Confinement | 3.00 | 1.70 | 5.10 |
| Small Breast Sizes Heroine (Non-Loli) | 2.00 | 2.01 | 4.02 |
| Oneesan-type Heroine | 2.00 | 1.81 | 3.62 |
| Classic Tsundere Heroine | 2.00 | 1.71 | 3.41 |
| One True End | 2.00 | 1.39 | 2.78 |
| Harem Ending | 2.00 | 1.39 | 2.77 |
| Protagonist's Childhood Friend as a Heroine | 2.00 | 1.13 | 2.26 |
| Multiple Endings | 2.00 | 0.66 | 1.33 |
| Nukige | 2.00 | 0.64 | 1.29 |
| Male Protagonist | 2.00 | 0.30 | 0.60 |
| ADV | 2.00 | 0.15 | 0.29 |
| Name | Characters | Importance | Weight |
|---|---|---|---|
| Extraterrestrial Role | 1 | 2.46 | 1.71 |
| Ahoge Hair | 2 | 1.31 | 1.44 |
| Pink Eyes | 1 | 1.61 | 1.12 |
| Older Sister Role | 1 | 1.55 | 1.08 |
| Younger Sister Role | 1 | 1.44 | 1.00 |
| Ribbon Tie Clothes | 1 | 1.24 | 0.86 |
| Ribbon Hair Tie Clothes | 1 | 1.18 | 0.82 |
| Twin Tails Hair | 1 | 1.12 | 0.78 |
| Teen Body | 2 | 0.61 | 0.67 |
| Shoulder-length Hair | 1 | 0.91 | 0.63 |
| Slim Body | 2 | 0.57 | 0.63 |
| Blond Hair | 1 | 0.88 | 0.61 |
| Waist Length+ Hair | 1 | 0.80 | 0.55 |
| Blue Eyes | 1 | 0.80 | 0.55 |
| Brown Hair | 1 | 0.68 | 0.47 |
| Pale Body | 2 | 0.37 | 0.41 |