Ama Ama Koakuma
Hijiri Amamiya, an introverted loner, turned down a sudden confession from Ema Kohanai, the most popular girl in school.
Since that day, Kohanai-san started acting strangely.
She plastered herself to him on the train, deliberately flipped up her skirt to flash him on the stairs... Finally, she pushed him down in the gym...!?!
(Source: G-Walk, translated)
Notes:
- Includes one extra chapter.
- Originally serialized under the title Ore dake ni Koakuma na Doukyuusei: Futtara Oshitaosaremashita! (δΏΊγ γγ«ε°ζͺιγͺεη΄ηγγγ£γγζΌγεγγγΎγγοΌ); COMIC Ananga Ranga Vol. 64,66,68,70,72,74,76,78.