You can see the horror roots of this author in the scenes where the boundary of life and death become thinner: the grandfather's imagination of his wife, and Nana's struggle with consciousness on top of the mountain. Paradoxically I appreciate as another commenter said how well they manage to keep destructive bugs from seeming disgusting, and bring out all of their behaviors in an interesting and neutral way. The side part about fan clubs and idols does seem out of place, but I think that's the beauty of an author putting together the different things they like into one work. What tender relationships they all have, both platonic and romantic.
They're so cute as well