Not only did he get a ring by her, he is wearing it on his RING finger. They're practically married, dude.
Had a look at Pixiv where the author has most of their main audience, and there was not a single r18 content, neither from the author, or from fan art.I would be severely disappointed if this author (or the fans) tries to sexualize this honestly wholesome depiction of gender nonconformity in adulthood.
Though it's nice to see different forms of punk attire, it'd be fun to see different schools of lolita fashion. So far it seems we're seeing more Classic than anything else - maybe we might head towards punk lolita as a synthesis?