Gal niPA-chan wa Semararetai is a Manga/Manhwa/Manhua in english language, SUGGESTIVE series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.cc fastest updating comic site. The Summary is

A popular teen niPA model named Asahino Futaba has a strong personality that doesn't flatter others, but the plain guy sitting next to her doesn't take a step back... Infuriating by the four-eye glasses! But at the same time, she's getting a weird feeling as her fingertips naturally went into her skirt. Futaba thinks it's crazy that she's playing by herself while fantasizing about being struck by that four-eye guy, but in her fantasy, she's really turned on...?!