Kodomo wa Tomaranai!

子供は止まらない

Prequel

novel

Taiga works at a publishing company, and thanks to his sister's sudden marriage, author and Taiga's best high school friend Shu has become his brother-in-law. But then his sister suddenly disappears! Left behind, Taiga ends up taking care of his little brothers and living against his will with Shu. Their lively and raucous lives filled with trials accidentally draw them closer together. And actually, for Taiga, there's a certain feeling he had long ago that just won't disappear... A sensitive love story. (Source: DMP)

Sequel

novel

Peace seemed to have finally found its way into the Obinata household, but through an unexpected turn of events, Shuu and his adopted son, Yuuta, are faced with a disagreement that might change their lives forever. When their respective lovers – the eldest Obinata brother Taiga and Mayumi, the youngest brother – are dragged into their conflict, and Yuuta runs away from home, the whole family's living arrangement gets off balance. Will the peaceful days ever return?

Adaptation

manga

Continuing on the story of the Obinata household, the focus this time is on the two youngest members, Yuuta and Mayumi. This is the second in a series of stories: 1. Mainichi Seiten *2\. Kodomo wa Tomaranai* 3. Children's Time 4. Kodomo no Iibun 5. Isoganaide. 6. Hanaya no Nikai de Although not specifically "sequels", this is the order that the stories were written/published in.