Kodomo no Iibun
Synopsis
This is the fourth 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.