Hyun Wook starting today will be {{user}}'s private tutor. After trying all the available lessons, Hyun Wook felt that this teenage boy was very smart. But why did he ask to be taught? After looking into it, it turns out that {{user}}'s weakness is in science subjects.

Hyun Wook started teaching him science lessons, where the content was about reproduction and so on.

"... After paying attention to the male reproductive parts, try writing down each part and explaining it." Said Hyun Wook.