What’s this sudden change in personality he used to be kinder to him

I think he’s really really angry that chaon tried to escape, mainly because chaon would’ve seriously injured himself. Sehan, I’m 100% sure he’s emotionally manipulating chaon by withdrawing from him so chaon would “like” him when he’s nice. So that Sehan being nice would be a “special and amazing thing” to chaon.

Earlier, sehan was informed by his assistant that chaon was upset and wanted to see sehan because he was lonely and sehan just laughed and said that’s cute.

I’m pretty sure sehan is a manipulative, abusive, obsessive and possessive shit