Synopsis
In the school counselor’s office, Sota arrives for his appointment expecting a male counselor. Instead, he’s shocked to find his older sister Mikako, who moved out years ago.
Too embarrassed at first to discuss his problem, Sota finally opens up after seeing her serious demeanor. His issue: during his first sexual experience, he climaxed before penetration and was laughed at. Since then, he’s struggled with premature ejaculation even when masturbating.
Mikako offers to investigate hands-on. But the moment she touches him, Sota climaxes immediately. Concerned about his future, Mikako decides to help him overcome this problem through practical lessons.
Thus begins their journey to conquer premature ejaculation together.
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