eruruu, kuon, touma kazusa, ogiso setsuna, ogata rina, and 2 more (to heart and 6 more) drawn by amazuyu_tatsuki, kawata_hisashi, mitsumi_misato, and nakamura_takeshi

Danbooru

Resized to 77% of original (view original)

Nekurumi

[hidden]

Added artist
Amazuyu Tatsuki for Kuon and Eruruw
Kawata Hisashi for Morikawa Yuki and Otaga Rina

I'm sure the other chars are drawn by Mitsumi Misato but I still can't find the difference between Tatsuki and Misato style.