Adults' Picture Book New Edition manga volume 3 features story and art by Kei Itoi.

Just when it seems like everything will be all hunky-dory and they'll get along just fine as a family, Fusako finds out that Kudou's been keeping secrets—namely the truth about Kiki's biological mother and Kudou's shocking first encounter with her daughter. Then when they learn Kiki's mother is, in fact, still in the vicinity, her very existence threatens the peaceful atmosphere of their household…