Kôhei Amasaki

Four men-Gure, Sui, Tokitaka, and Tsubaki-each help run a Japanese tea shop together called Rokuhoudou. When one visits the shop, they are greeted warmly, is served with tea, and are often helped with any problems they may have. (imdb)

A boy discovers that the genius girl of his classroom is also a genius at video arcade games. (imdb)

In the city state of Lisvalletta, the citizens live peaceful lives by day while crime and illegal drugs permeate the area at night. A highly lethal drug "Anthem" has taken hold and the SEVEN-O Special Crime Investigation Unit is tasked with stopping it. Members of the unit operate in groups of two called the "Double Decker System." Doug Billingham is a seasoned investigator, and joining him is Kirill Vrubel, whose abilities are mysterious and unknown. (Anime News Network)

Cocona is an average middle schooler living with her grandmother. And she who has yet to decide a goal to strive for, soon met a strange girl named Papika who invites her to an organization called Flip Flap.

Alisa Mikhailovna Kujou is considered the idol of her institute. She has won the hearts of countless male students and is admired by everyone else, but everyone is wary of this almost perfect girl.