Y’know the drill; Tenya does not get the love he deserves, at all. So, I am taking it upon myself to create headcannon’s centered around romantic relationships with other people (they can be twisted to be platonic instead of romantic). Suggest if you want someone specific and leave if you don’t like the post. Anygays, onto the ships!!
Kouji is such a adorable little sweetheart and I imagine that he is absolutely wonderful at painting and sculpting because it was his way as a little kid to grieve and reminisce over his fluffy friend’s deaths/disappearances. He also, of course, also just does both art forms for fun as well and he abso-fucking-lutely gifts these for practice/for funsies to Iida and will always do so. Also, he would totally give Tenya weighted blankets, plushies, destressing toys and much, much more from his personal collection if Iida wanted or needed them in even the slightest capacity. Totally the type of boyfriend to (somehow) absolutely decimate all carnival games first try to win Tenya one of those bigass plushies. (Nemuri totally played matchmaker for these two because they’re both very socially awkward and have a fear of rejection and could not confess to the other without help. Surprisingly, it was actually Koda that took the initiative after they were shoved into a locked storage room together.)
Jiro finds musical learning much easier than just regular learning, so she always records her class lessons and mixes these into music tapes later (she adds jazz music in the background too, duh) and she always shares them with Iida. Really, all of the stuff she gifts to Iida is musical in some way; tickets to a concert where a band they both like is playing, self made love ballads and everything else. Everyone in Class-1A has at least one video on their phone of the two over preforming duet-able karaoke together. (Ectoplasm was the one that suggested Jiro ask him out to a late night picnic on school campus and then fucking destroy the notes on hit love song of the time; Time for Hysteria by Execution Resolution(!), needless to say that Tenya was very confused because he does not keep up with trends at all and Jiro just had to outright confess instead. He accepted immediately after she stopped talking.) ((Jiro flipped off Ectoplasm then kissed Iida on the lips the next time twenty or so times she saw him and he was appalled, though supposed it was fair after he got the story from Nemuri who was spying on their date.))