Except it's not "just" a mature tag. A disturbing number of people are openly admitting they recognise a hentai artist who draws CSAM and they seem to be pretending that it isn't absolutely repulsive.
I like how azuma is still trying to help her even though she's jealous of nakano. Also love the third panel of nakano experiencing a minor case of eldritch horror from exposure to azuma's incomprehensible fashion knowledge.