Kiri = Patchy - of course, hikikomoris Nozomu = Rinnosuke - male (except Nozomu isn't the only male in his series) Kafuka = Reimu - other than the main character connection, I don't see any similarity personality-wise (Reimu's lazy, Kafuka's an alleged yandere) Maria = Cirno - on some levels, Maria is also a ⑨ Meru = Reisen - electromagnetic waves... probably correlated to cell phones using waves Abiru = Ran - Ran is a fox youkai; Abiru LOVES tails (no wonder she's always bandaged) Chiri = Sakuya - Chiri DOES have an arsenal of knives hidden under her bra, except we rarely see them, for her favorite weapon is a shovel Nami = Kaguya - probably because Kaguya is the only girl with a seemingly normal haircut (in this case, a hime cut); Nami is the only normal girl in class (and does NOT want to be one) Rin = Youmu - Youmu uses katanas; Rin once threatened to cut down Kafuka with a katana after the latter deduced the alternate spelling of her name: "zetsurin", which means "unparalleled" (if you know what I mean) Matoi = Yukari - of course, with Matoi's stalking abilities and Yukari's powers to cross dimensions Kaere = Keine - the possible correlation might be Kaere's split personality and Keine's superpowered alter-ego Harumi = Marisa - probably because Harumi is a shipper (of the yaoi variant), and Marisa IS the subject of various shipping tendencies (of the yuri kind, this time)
I planned on doing a series of Touhou/Zetsubou-Sensei videos, and two of these combinations are actually the same ones I used.
Rinnosuke is Nozomu Cirno is Maria
But, from there, they're all different. However, this seems to have been before the release of TH9, which a lot of my choices came from. Although, after seeing this, I'm gonna change one or two characters in my own thing.