「ヨウコのキャップはソフトボール部かなんかのつもり」シリーズ。

ついでにミカさんはファーストっぽい。

漫画→pixiv #89416104 "»":[/posts?tags=pixiv%3A89416104]

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Source: post #5811653
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From the series, "Does Youko's cap means that she's going to play softball".

And by the way, Mika seems to be the first baseman.

Comic → pixiv #89416104 "»":[/posts?tags=pixiv%3A89416104]