The student/teacher relationship is a story from parallel world.
So its what if Ito didn't get kidnapped and trained to become an assasin and what if kyousuke's mom didn't abandoned him so he didn't become a prostitute.
So basically it is pure fantasy and it never happened? makes sense but putting it there in between chapters threw me off. I didn't realise the chapter was called "extra-parallel world" because I read the chapters back to back without seeing the titles and I was just eagerly clicking after reading each page just to see what happens next. Thank you for clarifying that :)
youre welcome~
I don't understand this:
1- They both got away from the guy who made Ito, until this point, I get it
2- They got involved as a teacher and student. At this point, I think Ito has his memories and the boy doesn't recall everything (at this point Ito san doesn't look older so I'm assuming this is around the same year they escaped Ito's boss.
3- The jump to 5 years where the boy is bartending! This is the most confusing part! If he got involved with Ito when he was a teacher then why can't he remember him? Why does it look like the student/teacher thing never happened?