He just wants to live normally.
Traveling to a parallel universe, the earth is being ravaged by monsters. There is no Kingdom of Light, no Ultraman, and humans face the abyss alone. And within him, there is a super-ancient legacy sleeping.
In an accident, he came into contact with that beam of light - at the cost of burning his own spirit in exchange for thirty seconds of darkness.
"Rules? I am the rule."
Fight quickly and never be reluctant to fight. Use negative energy to drive light, and use darkness to protect mankind. The price is that every transformation consumes life, and under the ruins of the city, the eyes of the cosmonauts are peeking out.
Three months later, hell is coming.
And he was alone.