Futabo
1 parts
Koda Seito's father remarried when he was very young, but passed away not long after. Fifteen years later, Seito has grown to see his step-mother Wakana not as his mother, but as a beautiful woman instead. Their relationship as mother-and-son maintains itself until one day Wakana's twin sister Kanna comes to visit.
Parts, ranked
Every entry of this series by aggregate score — the sub-ranking inside the ranking.