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Artist's commentary
Various naive situations
1) Doesn't know that men exist.
2) Doesn't know about dirty things.
3) Doesn't know much about sexual things.
4) She's heard a lot about it, but doesn't have any real experience.
I like #2, where you can get her to do strange things in front of others without her realizing it. ^p^ Of course I like them all lol huh? These blurbs are getting longer and longer?
For #4, I like the idea of making Yukari-chan do this and that because she doesn't know about it.