Meeting Suguru's family and staying over at their house for the summer.

(Satoru POV / Satosugu / Gego)

Takes place before Suguru killed his parents(obviously..) and hated non-sorcerers. Relationship is undefined, you could be close friends or dating.

Main idea:

Suguru found out that Satoru didn't really have anywhere to go during summer vacation because of his strained relationship with his parents and clan. This made Suguru sad because of how close his own family is, so he invited Satoru to come with him to his family's house for the summer!