I don't like how he just forgive her, I mean didn't she torment him throughout school? Didn't she burn him and stuff? If someone did that to me, I definitely wouldn't forgive them, no matter what the reason was because that isn't a reason to hurt someone and bully your friend from childhood.
@xxidiota his backstory is animated, there's an anime of akatsuki no yona pretty sure its an extra episode seeing as there are 24 full episodes of the series
rereading Zeno's backstory hurts me so much, it's just so sad to realise he's gone thousands of years watching his comrades' descendants die whilst he cant ever feel the relief of finally dying :(