Seira Fukamori is a classmate of Haigaoka Meimei and a good friend of Meimei. He occasionally teases Meimei.It was she who first discovered Amei's magic talent and persuaded Amei to join her in saving the “lost lambs”.She was also the first one to discover Amei's feelings for Asuka, and often secretly helped bring them together.Shengliang is not afraid of anything, she is a mature girl.In normal times, she is a cute and quiet student, but after class, she will change into a white nun's uniform and go to the church on campus as a novice nun.Often helpless people would come to church to pray for God's help, and the Holy Spirit would listen to their stories.Then she will tell Amei about the difficulties people encounter, and Amei will then dress up as St.tail to solve the problem.Shengliang's parents are both devout believers.Shengliang also decided not to take off the cross from his neck for the rest of his life.She is peace-loving and often breaks up fights with others.However, in the comic extra chapter, she was moved by Sado and took off the cross and put on the fish-shaped necklace that Sado gave her. She also relaxed her mind and stopped caring about fighting. However, she still became a nun when she grew up and continued her work.She was the first person to know the secret of Meme being a phantom thief, St. Tail (Saint Girl) (actually the person who persuaded Me to become a Saint Tail was Seira; the other people who discovered Meme's secret successively were Tomoko Nagata (female detective); Sendō Shinju)(The person who uses hypnosis to know the secret of the Phantom Thief St. Tail (Saint Girl)); and Asuka II, the last person to know).Seira often asked for a lot of useful information in order to help Amei, or modified it into different appearances.She will also make auxiliary medicines such as comatose perfume to help Yamei.