Teacher... Can you protect us who are being bullied...? Two plain-looking schoolgirls plead for help, offering to protect us in exchange for double nipple harassment. Kuramoto Sumire, Hanagari Mai MIAA-790

Sumire and Mai are inconspicuous in class... However, after it was discovered that they had sensitive nipples, they were bullied every day. After discussing it with their class teacher, the teacher used the excuse of improving nipple physique to start developing their nipples!