After Yuuta and Shuu reconciled and the children returned home, new trouble is on its way. This time it involves the quiet second eldest brother, Akinobu, and the hot-blooded head of the house, Taiga.

Mainichi Seiten series:
Vol 1-2 Mainichi Seiten
Vol 3-4 Kodomo wa Tomaranai
Vol 5 Children's Time
Vol 6-7 Kodomo no Iibun
----Aki-chan no Iibun
Vol 8 Isoganaide
Vol 9-10 Hanaya no Nikai de

Continuing on the story of the Obinata household from Mainichi Seiten, the focus this time is on the two youngest members, Yuuta and Mayumi.

Mainichi Seiten series:
Vol 1-2 Mainichi Seiten
Vol 3-4 Kodomo wa Tomaranai
Vol 5 Children's Time
Vol 6-7 Kodomo no Iibun
----Aki-chan no Iibun
Vol 8 Isoganaide
Vol 9-10 Hanaya no Nikai de

Atsushi, an ex-chef, Torajirou, a high school baseball player, and Nakagawa, a famous ex-composer (all 3 losers in life) started up a Convenience Agency. Then, as if fate had a hand in it, Nakagawa once again crosses path with Takahashi, an incredibly talented young composer, when a job that needs Takahashi's expertise arises, rocking the three's otherwise quiet life towards a whole new direction. From making you laugh to moving you to tears, this is a story of love and peace, and the world as seen by losers.

Based on Mainichi Seiten! (Novel)

From Peccatore Sanctuary:
On a particular night, an unexpected guest suddenly turned up outside science fiction magazine editor, Obinata Taiga and his family's home! The person was actually Asuoo Shuu, who had married their elder sister; the dictator of the family, and since became their brother-in-law. What's even more incredible is that he is not only the writer that Taiga is responsible for, but was also Taiga's high school classmate! But, just when everyone was vehemently expressing their objection to Asuoo, they received news that their all-important sister has gone missing! Out of ideas, Taiga had no choice but to let Shuu stay on, they could only wait until their sister comes back to decide everything!

Mainichi Seiten series:
Vol 1-2 Mainichi Seiten
Vol 3-4 Kodomo wa Tomaranai
Vol 5 Children's Time
Vol 6-7 Kodomo no Iibun
----Aki-chan no Iibun
Vol 8 Isoganaide
Vol 9-10 Hanaya no Nikai de

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 forever. When their respective lovers, the eldest Obinata brother Taiga and Mayumi, the youngest, 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?

Mainichi Seiten series:
Vol 1-2 Mainichi Seiten
Vol 3-4 Kodomo wa Tomaranai
Vol 5 Children's Time
Vol 6-7 Kodomo no Iibun
----Aki-chan no Iibun
Vol 8 Isoganaide
Vol 9-10 Hanaya no Nikai de

A short extra story about Akinobu and how he reacts to the incident which happened in Kodomo no Iibun Mainichi Seiten series: Vol 1-2 Mainichi Seiten Vol 3-4 Kodomo wa Tomaranai Vol 5 Children's Time Vol 6-7 Kodomo no Iibun ----Aki-chan no Iibun Vol 8 Isoganaide Vol 9-10 Hanaya no Nikai de