Belial, From the Start, Playing the Role of Zero's Wife

(One female lead, urban romance, Ultraman Spy x Family, everyday romance)

After a loving reunion with his son Geed, Belial's escaped remnant soul is pursued through the universe by Zero. In the end, they both run out of energy.

When they wake up again, Belial's remnant soul has merged with Rumi, the wife of Zero's human host, Jin. Meanwhile, Jin has also run out of life energy and completely merged with Zero.

Zero: My human host, Jin, died because I was chasing Belial. So I plan to become him and protect his wife and daughter. They absolutely mustn't discover who I really am.

Belial: I'm Rumi now, with only the power of a remnant soul. And my archenemy Zero is right beside me. To keep my identity from being exposed, I have to play this woman's role seriously and cling to life by his side, treading carefully.

Little Mayu (after awakening the Little Star of Letru, she gains the ability to hear people's thoughts): That's strange. Lately, Mom and Dad have been thinking all kinds of weird things. Dad keeps thinking about protecting the Earth and his family, and about how he can't touch Mom.

Mom too. She's thinking all sorts of terrifying thoughts, like destroying the Earth and everything else, and even... seducing Dad?

An Ultraman version of Spy x Family: Zero as the father, Belial as the mother, and their superpowered daughter, who has awakened the Little Star of Letru. The extraordinary everyday life of a family of three!