Ultra: This Blue Little Ultra Is Too Kind.

Lin Tian traveled through time and became Ultraman Seth, the son of Ultraman Seven and the younger brother of Ultraman Zero. But he discovered that he was an Ultraman of the blue race, who was incapable of fighting, scientific research, and treatment. Severn was embarrassed because Seth was famous for his uselessness in the Kingdom of Light. Seth could only face every Ultraman with a smile, trying to look kind. However, Beria invaded the Kingdom of Light. Seth, who is in crisis, awakens the core kindness system. If he shows kindness to others, he can gain the opposite ability. A smiling and beautiful Seth was born. Membius: Seth, when did you learn Membius lightsaber? You seem to be better than me! Zero: What a powerful flying kick from Seth! Beria: Seth, you... Bagayalu!