fill me in pls

i stopped reading this at like 40-60 chapters in back then (and i dont think ill fully pick it up back again) but then i just read thw latest update to see whats happening and i want to ask what happened to the sweet ans caring ido?!?! i did read the spoiler abt this being their 2nd life and ido trying to redo his past but why is he still an asshole? pls could anyone fill me in i dont really have. the time to reread this