Honestly, it's just sweet that Mikari and her senpai got to rekindle their friendship. I hope that we get a few more chapters of otaku friends doing otaku friend stuff before love triangle drama starts.
Also, has that manga been ongoing since their childhood up til now? That's not impossible, but certainly strange. Maybe it's monthly instead of weekly or maybe it has Berserk or HunterxHunter tier hiatuses. Either that, or its the One Piece of their universe...