Sakamoto Days (Manga) Vol 03

Team Sakamoto enters an airsoft tournament organized by the shopping arcade in the hopes of winning the million-yen prize. However, things don't go as planned and they find themselves teaming up with a not-so-sharp sniper called Heisuke. Meanwhile, some shady characters connected to the secret organization that raised Shin are on their way to Sakamoto's... For older teen audiences. Viz Media Llc
(W/A) Yuto Suzuki