Ultraman: We Are the Belial Security Squad!

[Lighthearted antics, a truly good-hearted Belial] He transmigrates into Belial not long after the Great Ultra War ends, before Belial has fallen to darkness. After teaming up with Ken to defeat Alien Empera, who came from the future, Belial decides to stop passively and blindly protecting everyone while wearing himself down against an endless stream of evil beings. Instead, he will seek new power and crush every enemy with overwhelming strength.