The Son of the Harem King is Busy with Babysitting

Yuuki Yuto, a man summoned to another world as a hero, is a legendary warrior who defeated the Demon King and saved the world. As a hero, he has rescued countless people while simultaneously collecting numerous beautiful women into his harem. ——One of his children, Yuuki Yui, finds herself alone after her mother's death. Since then, she has been forced to take care of the children her father has fathered elsewhere. "That damn old man! Again?! Is it happening again?!" Such cries can be heard as Yui takes care of the children her father has carelessly created in various places and cannot manage himself. This is a story of a protagonist struggling with hardship who, while raising children, unconsciously builds a harem just like her father while devoting herself to childcare. *A childcare harem story.