Anonymous 09/23/2022 (Fri) 03:37 Id: d20b91 No.270833 del
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I think the implication is that this is an older Curren who's married to Trainer-san, and while cleaning she found her old race outfit and put it on. This is why she starts to call him anata but then switches to onii-chan.
Wait, no, you can't just say something like that almost immediately after telling me no more frowns for the day.