College Grades Skyrocketing

Alternative:

성적떡상 / A Prize for Grades / Recompensa íntima / Study Buddies / Sexual Achievement Prize / Sexual Prize For Grades / これぞ成績アップの必勝法♥ / 家教住我家 / 难缠姐妹偏要和我同居

Minho is a repeat student who’s suffering because his grades are not improving, but his sexual desire is only rising.

His childhood friend Harin and his sister Rahee learn about Minho’s situation. Due to those sister’s tearful efforts to help, Minho´s college grades begin to skyrocket.