Описание персонажа
Гардероб's young student, a vibrant coral otome from Annana. She is a reserved and timid character, which draws her to the lively and active Arika. Although initially hesitant to make friends due to personal reasons, she eventually bonded with both Arika and Nina. She excels academically, but her otome skills may not be as remarkable as Arika and Nina's. Despite this, she supports them wholeheartedly and even risks her life for Arika. Her family has a long-standing devotion to the "god of knowledge and technology" and she also participates in the struggle against Garderobe. However, it was her "slave" that prevented Nina from killing Arika. Coincidentally, when Nina destroyed the "slave," Erstin was also killed. According to the Japanese Wikipedia, the name Erstin Ho is an anagram of the word Holstein, which in this case refers to the breed of cows, hinting at Erstin's ample bosom, with the typical Japanese substitution of "l" for "r".