Miu x BBC (request) (Patreon)

Miu is training Ryozanpaku's newest disciple while everybody is away. During the lesson, she tells him that his belt isn't tied right, but before he can fix it, his pants fall down, exposing his giant black cock. Miu never imagined they could get that big. Without thinking, she says he won't be able to continue training with that big thing like that, so she offers to help.