KTDV-216 - The suppressed instinct of an old gentleman, dangerous tutoring for high school girls

A gentle old gentleman turns into a beast. The little relative he once knew has grown into a high school girl in a uniform. In an empty classroom after school, the strict old teacher reveals his true colors. Seeing the fresh body of a high school girl, the old man's sleeping 'shotgun' ignites once again. A hot, final outburst from an old man before he goes to the grave—how far will he go?