Nipple Controller Countermeasure Verification ~A Brilliant Sorcerer Who Can't Resist Playing With Nipples and His Childhood Friend~

"You know how there's that thing where the hero's nipples become the demon king's controller? What would you do if I said I had those too?" "I see. Can I touch them?" A brilliant mage works hard to peacefully touch his childhood friend's nipples. Meanwhile, the demon king's aide was plotting something as well... On one side, to protect his own desires and his childhood friend's peace, and on the other side, to devise countermeasures against the user of the nipple controller—the number one cause of death for the demon king—the men's intentions intersect! This is a creative BL story with no sexual descriptions.