[ Manga Manga ] Ore ga Kanojo o Okasu Wake 01

As far as I know, there was a girl who Ooki Ryuuji liked. A teen was born as a result of this individual's marrying his brother and having a child together. After years of hiding them, his emotions became warped and clouded. Rinka, the teen of his brother, came to him when she escaped from her parents' custody. She has such a lovely smile... Mom and daughter were inseparable. She's acquired bulk in her breasts and thighs that show through her sailor outfit as she enters puberty. Ryuuji's remembrance of his own memories prompts Ryuuji to relive his own. After discovering an aphrodisiac by chance, his rational side crumbles to pieces. Hers is a long-standing friendship. She's just like the girl I admired, plus she has a really mature physique... I know I won't be able to keep myself back for very long.