The manga Deatte 5-byou de Battle (loose translation: Battle in 5 seconds after meeting) by Saizou Harawata and Miyako Kashiwa will get an anime.
The official website revealed the first look:
Synopsis
The story begins when Akira Shiroyanagi, a high school student who loves games and sweet konpeito, is suddenly embroiled in a battle over a mysterious girl who goes by the name Mion.
Harawata posted the original manga online before Koshiwa released the “remake” with new illustrations in Shogakukan in 2015. The manga is also available on the Manga ONE app.
Finally, Deatte 5-byou de Battle has more than 2 million copies in circulation, with 15 volumes to date.
Sources: Comic Natalie , Deatte website