Jirai-kei Netoge Tomodachi to Koibito ni Naru Hanashi

Sequel to FPS no Tomodachi to Real Deau Manga. M and RR once again go to Akihabara so they can play a new online game title at an internet cafe! However, right after the meetup RR is suddenly informed of a certain matter by a mysterious character claiming to be M's acquaintance...? (Source: Melonbooks, translated) Note: Released as a doujinshi at Comiket 102 and later published by No. 9.