I have the same confusion. I thought i missed a chapter in between or something
He is the 28 y/o but apparently he already started to like the MC
Kinda like an internal conflict
Some comments said he is actually jealous of the 20y/o ver of him
There was a flashback scene. It was confusing because the artist didn't clearly show where flashback ended, so you just had to figure it out from context
Ooh makes sense now. I'll go back and re-read
I thought he liked him even before losing his memories.. and yeah I can see him being jealous of himself after crushing the note
I'm confused did he switch back to his 20 Yr old self . or has the older version finally snapped