Itsumademo Musuko no Mama ja Irarenai! 3 ~Kyonyuu de Muchimuchi na Kaa-san no Oppai o Sutte Monde Hasande Ippai Dashitai!~ The Motion Anime

Our main character, Arata Hibino, has loved his mother, Manami, very much since childhood. It seemed that he was about to decide to leave her, a mother who cannot forget her deceased husband, and live independently.

But one day he accidentally injured his hand. Upon learning this, his mother became worried and decided to stay with him until he recovered. While preparing his meals and helping him change clothes, Manami regained her former role as a mother and took care of him. However, daily bathing with her son also became part of her new maternal role...