Ore no Kuchibiru ga Nerawareteimasu: Pororo Gakuen no Blue Line

The students at Pororo Academy aren't studying regular academics—they're here to master unbelievable skills and abilities! But one student has been blessed with the rarest gift of all: Blue Line. With just one kiss from a Blue Line holder, it can greatly enhance another person's ability! But while the BL ability seems like a great power, the person who has it has different opinions.

(Source: Seven Seas Entertainment)