Hell's Paradise Jigokuraku (Manga) Vol 11 (Mature)

The palace has transformed into a bloody battleground, forcing the new Yamada Asaemon arrivals into an uneasy alliance with those seeking to escape the island. In the midst of the tumult, a giant monster enters the fray, one so large that the combatants become trapped within the confines of its body. If they don't escape by morning, they will be transformed into flowers and used to fuel the destruction of everything they know! For mature audiences. Viz Media Llc
(W/A) Yuji Kaku