Ultraman: Ocias, the Giant of Light

[No System + Nearly Invincible + Original Ultraman + Original Monsters (for now, they only have names; if possible, I'll figure out how to design their appearances later) + No grimdark tragedy, just people doing their best in battle and in life + Episodic, with the main plot woven in subtly]

One day, enormous unknown creatures suddenly appeared in an ordinary world. Some were contaminated giant beasts, some were monsters born from resentment, and some were visitors from outer space.

Humanity faced more than giant beasts and disasters. It also had hope: the hope known to humankind as Ultraman Ocias!

Let's go, Ocias! Together, we'll protect humanity's future and hope!