[Kusa-San]

Originally Posted by Kanon

It's also confirmed in the relationship chart, which was released before the series even started. Looking at it again, it looks like it spoils something else

Spoiler:

Shu will eventually admire Gai. Probably once he remembers Gai is his awesome childhood friend.

Oh this whole thing about Gai and Shu is really interesting. Can I have the relationship chart ? Is it translated ?

But more importantly :

Spoiler for Shu and Gai:

Why Shu has forgotten Gai ? I'm sure Shu and Gai are experiences from Shu's "mother" or something like that.