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Artist's commentary
Hang in There, Kogasa-san 2567
If you seriously give up, though, it's okay just to leave off right there and go play on some other attractions. Or maybe I should say it's still unpleasant to solve it little by little. :-)
When went to give up at the start, it was in order to return the borrowed writing implements, but once I got one hint, I instantly understood and continued.