Responses
I think it's this one, great manga ヾ(☆▽☆) http://www.mangago.zone/read-manga/distopia_mikansei_na_sekai/
Yes!! Thank you so much!!
It's not, but the one you gave seems good. I'll read it. Thank you!!
Oh, yeah, Invoke is very nice~ ლ(´ڡ`ლ)
The setting is "kinda" like Sword Art Online where you can play the game as if it's the real world. The game is dating sim though. I don't really remember that much but "A" (still a student) helps his older brother(?) with the production of a new dating sim. He played the game to test if there are bugs and gradually fell in love with the character in the game. I'm sorry I can't explain that much. >.< I remember "A" is smart and really popular in his school.