Marriage Toxin manga volume 8 features story by Joumyaku and art by Mizuki Yoda.

Kinosaki signs Gero up as a driver for underworld bodyguard Chinatsu Akakura, but this job is no Sunday drive! With an entire clan of pinwheel masters on their tail, Gero will have to help Akakura protect her charge Erina Zao at all costs - and if Gero wants to win Akakura's heart in the process, he may be out of luck unless he can win over Zao first…