Kaien no Bell de Oyasumi

Subaru Yoshii is an anxious and socially awkward boy. Upon transferring to a new school, he meets a fellow freshman, a boy known as "Prince"! Subaru doesn't know it yet, but a new world is waiting for him behind the stage curtain in this thrilling high school theater story!

(Source: MANGA Plus)

Kaien no Bell de Oyasumi was published digitally as an English simulpub as Curtain's Up, I'm Off through MANGA Plus.