Responses
I only have it in Spanish
And only can say theh ir better that Chika is the adult, cause the adukt Haruka if pederastian
https://visortmo.com/library/manga/73255/sayonara-alpha-bono-no-tame-no-omega
If you are so freak out for this, don't see the other version where Haruka if older than Chika.
Haruka is Chika's sensei
And I tell you is worst than this version!!!