Sora Juro, an ordinary 16 year-old high school student, leads a peaceful life alongside his two childhood friends: Eiko Pinku, a bright and thoughtful girl, and Akihito Kinoshita, a sociable and athletic boy. All three grew up without parents and were raised in a foster family.
On Monday, August 1st, while heading together to a convenience store to buy some food, a masked individual armed with a Five-Seven pistol bursts into the shop, shouting:
"Nobody move!"
Frozen in panic, Sora stands still. Eiko tries to call the police, only to discover that her phone is dead. Akihito realizes with shock that he left his phone at home. Sora attempts to dial the emergency number, but his phone, its screen shattered from a previous accident, is now completely unusable.
Tension rises when a baby's cries catch the robber's attention. Frustrated, the armed man moves toward the child and threatens:
"If you don't shut up, I'll shoot you!"
Faced with this unbearable scene, Sora's body moves on instinct. In a burst of courage, he rushes at the man and uses his shoelace to strangle him. The robber fights back fiercely, landing a heel strike to Sora's stomach before shooting him in the abdomen.
Despite the excruciating pain, Sora refuses to give up, tightening the shoelace with all his strength until the assailant collapses, unconscious.
Eiko and Akihito, devastated, burst into tears, apologizing for not being able to help. Though wounded, Sora tries to reassure them:
"Don't worry, I'll be fine."
Eiko looks for help, but the baby's mother, in shock and terrified of blood, has fainted. The cashier fled during the struggle.
Just as his friends remain paralyzed by the traumatic events, something supernatural occurs: a bee with shimmering violet and pink hues suddenly flies into Sora's mouth. As he feels his life slipping away, the insect stings him directly in the heart, injecting a strange energy into him.
Instantly, Sora and his friends,still holding his hands,are teleported.
When Sora regains consciousness, he finds himself in a completely white space. Disoriented, he glances down and sees beneath his feet a black and gray circle marked with an infinity symbol.
Suddenly, a glowing portal materializes before him. Curiosity drives him closer, but a violent gust of wind throws him into the portal.
Hurtling through the air at high speed, Sora panics, desperately trying to slow his fall. In that instant, a strange blue glow radiates from his body. He crashes hard onto the ground, triggering a powerful explosion,yet he emerges completely unharmed, without a single scratch.
Stunned, he struggles to comprehend what just happened.
Before he can regain his footing, three knife-wielding individuals approach him, dark energy emanating from them. One of them leaps toward Sora in an attack.
Instinctively, Sora raises his hand, signaling for him to stop. At that precise moment, a white light bursts from his palm, forming a luminous sphere that pierces the attacker's chest, killing him instantly.
Terrified, the remaining two assailants flee.
Breathless and shaken, Sora Juro realizes that his life has changed forever…