The serious Ito and the child-like Nishi meet by chance during a single player game of “White ...
It builds up your emotions as you read then at the last (kind of) chapter you burst that's what I did I burst right then and there
I did get mad and sad for them in between but the last chapter just had me different. The "extra chapter" was getting me into a happier mood it was more lighthearted it didn't make me feel bad when I read it. Basically this manga is amazing!!