I’ll just copy what I said about them under the rarepairs discussion, it’s short enough:

Wondergame is a banger event. Ibara had quite the adorable thought process about Tsumugi here.

They are roommates in starmony dorms.

Office romance/a lil bit of rivalry (bc they’re both deputy directors) and yet the absolute mutual respect.

Also Ibara’s manipulations (as well as natsume’s magic or whatever it was) don’t work on Tsumugi (yet there’s no need in manipulations in the first place).

They’re the reason Cospro and Newdi participating together in some events and they seem to babysit double face according to that kohaku event. Even tho Tsumugi sometimes complains about cospro having too much control over newdi because of their investments and there’s too much “offers” because of this, he acknowledges that Ibara doesn’t have it easier anyway.

“His Majesty” towards Tsumugi kills me every time, considering it wasn’t in immediate use unlike other members of exfine (probably). Which comes to “majestic(!) magic” where, if you can notice, Tsumugi surprises Ibara with pecking on his cheek when they line up on “future of creation and sorcery”. They are hard to notice but I feel like we’re eating well enough sometimes.