Battle in 5 seconds after meeting - Season 1

Akira on his way to school is attacked and killed. Later he wakes up amidst a group of people who were similarly brought up there. They are given a supernatural ability to fight each other.

Yuuri hates it when something happens just by chance. She has had a hard time in home. She has to fight a strong opponent to pass first round.

The second program is revealed to be a five-on-five team battle, Akira finds himself on the same team as his first opponent, Kirisaki, as well as Yuuri, Shin Kumagiri, and Satoru Sawatari. While the other four begin revealing their abilities, Akira realizes the inherent danger of doing so.

The teams are tied in the first rounds of the second program fights, but Madoka Kirisaki's battle with Saeko Zokumyoin continues.

Akira enters the third program, where he reunites with Yuuri. After throwing off their pursuers, Katsuya leads them to the Team Green home base.

Shirosagi's unflinching nature gives Akira the confidence that he can finish the third program with Team Green. But to get there, he has to make a big decision...

The battle with the ghoul continues, but Akira has a plan. After the battle, while the Red team decides to attack, Mion proposes a new mission.

While the team spends the week preparing for the "Hunt the King" quest, Akira and Yuuri pay a visit to Team Blue.

Akira visits Rin Kashii with a proposal, as the battle between Team Green and Team Red heats up!

Shirasagi catches the spy infiltrating Team Green, only to learn there's another traitor in their midst. As war wages all over the field, Kumagiri finds himself in desperate straits.

Akira engages in a battle of wits with Kuroiwa while Yuuri continues to face down against Oogami, who seeks an answer to a particular question through the fight.

The quest reaches its end in a battle between Yuuri and Oogami, Team Red's king. Meanwhile, Akira concludes his battle with Kuroiwa and seeks to complete the third program once and for all.