Mori has been shown to be very ruthless and unfaltering when it comes to violence. Mori never takes emotions into full account, the epitome of logical thinking and strategy, he cares about Dazai halfly but Dazai hates him, the saying in the mafia is “the greatest misfortune for those who are dazai’s enemies, is that they’re Dazai’s enemies” (Dazai is a detective with a beige trench coat who takes after Mori, being Mori’s old apprentice, who was also groomed by mori, he hates Mori now)