Hayashi Shoutaro is an otaku and a student who sucks at studying, the results showing on every test; if that wasn't the worst, he makes promises like the one who scores the lowest has to clean the classroom by themselves. In his classroom there is a girl he likes, Kanda Yayoi, who always scores the top and is popular among boys and girls.
After going home from cleaning the classroom, he's met by his perverted/otaku sister who has him cross-play (cross-dressing cosplay) to go to an anime merchandise display, where he meets Yayoi who is also an otaku and she falls in love with his cosplay-persona...?
(Source: mangaupdates)

"Noblesse Oblige" - The obligation of nobles. This addition to the World Witches franchise focuses on the 506th Joint Fighter Wing; a squadron of witches tasked with protecting innocent people from the Neuroi following the liberation of Gallia. These Witches are referred to as the "Noble Witches" because of their social status and their dedication to serving the needs of the less fortunate.