if you ignore the slightly perverted curious kid there's nothing bad. no sex no predatory behaviour no pedos or anything. Some ambiguous moments (but no harm whatsoever) the manga is mostly about how their universe works
There's no sex, no dicks, no Masterbation, only thing in here is occaional groping and sexual innuendo. Just a bunch of short read in any-order stories with the only goal is to have a slight-half-harded giggle.
other mangas: sex at chapter 2, married, 15 children
this manga: we‘ve been dating for 35 years now not sure If I love you tho