I wish more yuri would make stories where characters bond off of deep shared experiences like this, I mean I love the yurislop as much as the next gal but this feels so much more meaningful and romantic(even tho it doesn't even has the romance tag nor any "romantic oriented scenes", other than, in my opinion, the moment where Hina expresses that her name with Naos sounds like a great family name, like she didn't include the rest of the Kyougokus, this sounds very much like a "want to build a family with me" type of scene) than your average 3 volume nothing burger story, EVEN THO THIS IS A ONESHOT.