What I mean by lukewarm is not a good one, but not a bad one. It could be forgettable or just mid in general. I put forward 30 years old: It's something I've read and remember nothing about.
Most mafia boss ML stories are mid or terrible, eg Mayday, mayday, mayday, when the yakuza falls in love, Hyanghyeon Text, Legs that wont walk, Cover up 1 reply
