This is the fifth in a series of stories: 1. Mainichi Seiten 2. Kodomo wa Tomaranai 3. Children's Time 4. Kodomo no Iibun5. Isoganaide. 6. Hanaya no Nikai de Although not specifically "sequels", this is the order that the stories were written/published in.
Doesn't look like anyone has reacted to this yet