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Artist's commentary
Sempai, you wouldn't have a spare change of clothes, would you......?
Practice drawing wet, see-through clothes
Supplement:
If you pay for FANBOX you know, but underclassman girlfriend-chan really won't cheat on you. If you've only seen past illustrations of her on Pixiv, you might misunderstand.
For more details:
https://onnoveltet.fanbox.cc/posts/1863259