Time passed quietly, and life was surprisingly peaceful since Sakamoto left the dark world.He runs a small community convenience store with his beloved wife and lovely daughter, and his life is dull but warm.Time also left traces on him - the once cold and agile killer has now gained a little weight, as if he has completely transformed into an ordinary family man. However, fate never allows those who truly “quit” to retreat safely. One day, a figure from the past suddenly visited, breaking the tranquility.The other party handed him an undeniable choice: return to the killer world, or...death. The door he thought he would have closed forever creaked again.And this time, he not only has to fight for himself, but also protects the hard-won happiness.