Square Sisters

Growing up next door to sisters Mizuki and Satsuki, Takumi has shared skiing trips, grocery runs, and the kind of easy friendship that just becomes part of your routine. Then his dad comes home one day with two girls, Saori and Yui, and announces they're family now. No long explanation, no gradual buildup — just two new people suddenly sharing his space and his life. Takumi doesn't know what to make of it at first, and honestly, that confusion feels real. The story is really about what happens in the months after that door opens, as these four people figure out what they mean to each other. It's a short watch at just two episodes, so it moves quickly, but there's genuine warmth in how the relationships develop. The character designs are expressive and the soundtrack does a decent job of carrying the quieter emotional moments. If you liked the grounded relationship drama in Kimi ga Nozomu Eien or appreciated how Yosuga no Sora leaned into its character dynamics, this covers similar territory. It's not a slow burn in the traditional sense — more like a focused slice of a story that trusts you to fill in the gaps. Keep in mind this is a hentai OVA adapted from a visual novel, so go in with the right expectations. Within that context, the character work is more considered than you might expect.