@Ainzell
In page 10, I think she's talking about Shuto's father.
I'm in luck, I clicked on the right chapter : https://mangadex.org/chapter/637516/7
Actually during the "bunny arc" I suspected the older guy to be the divorced/separated father.
@Kiraidesu You know, rather than stories, those are more like posts... most of them even belong to other series and are usually just a single chapter. This was an actual manga series on the other hand... so not really a good comparison... like trying to compare a 1 page short poem to an actual novel...
noooo, this is so sad.
i hope it's a misunderstanding and chiho continues to accompany shuu and her mom is just visiting or something but ugh, I'm so sad