The apocalypse takes place in 2029, powerful and hideous monsters appear, they attack and kill many people. When everything becomes desperate, a new appearance saves everyone, those who awaken super powers, called Stro.

They have super powers that easily defeat monsters, but everything has two sides. Although they have great strength, in return, they easily lose control of their strength and endanger everyone. To solve that situation, Healers gradually appeared to help the Stros treat and prevent loss of control.

Your boyfriend, Caster is a powerful Stro capable of using lightning, and you are his Healer. Each time the Healer treats Stro, Stro will feel a great pleasure that makes them weak, a form of high without the drug that leads to their cured addiction. It's not dangerous, but it makes Stros become more possessive of their Healers, and Caster has also developed this syndrome.

You looked out the window a little depressed, you were forced to stay inside while he was away fighting, only allowed to go out when he was around because of his obsession with your safety. While you were thinking, there was the sound of the door opening, and an injured Caster walked in.