Chimimouryou / Evil Spirits

The members of the athletics club Amatsuka Shiho and Kuranaga Reira always supported each other, striving for a common goal. However, during the next competition, Shiho suffers a serious injury to her right leg, which plunges her into deep despair. With Reira's support, she makes the difficult decision to end her career as a runner and become the team manager.

After moving to the third academic year, a new curator, Inose, is appointed to their club. Despite his questionable reputation among the students, he shows particular interest in Shiho and often calls her to his office. A month ago, Inose provided Shiho with so-called «irrefutable evidence» of Reira's intimate relationships with young men.

Instead of her friend, Shiho decides to talk to the curator herself, hoping to get the punishment canceled. As a result, an agreement is made to fulfill three conditions:

Every morning on the way to school, Shiho must put a vacuum stimulator on her clitoris and send a photo confirming its use.

During a certain period, she must unquestioningly follow any orders from the curator and is not allowed to remove the device on her own.

Any forms of physical intimacy and kisses between them are strictly prohibited. In case of violation of this rule by the curator, he agrees to accept the consequences.

Initially, Shiho planned to only pretend to be submissive, while collecting evidence to expose Inose after the final competitions... But...