I didn't understand pyeonghwas backstory can someone explain?

After pyeonghwas' mom or parents died, the police officer took him and SA him

Wtffff I thought it was physical abuse!! Like beating him up... And that's why he developed some masochism

No coz when I read the line "I ended up growing up too fast" it made my stomach drop bc of its implications but maybe there was physical abuse also involved and pyeonghwa developed that kink

So fucked up ╥﹏╥