Fukaishisū Crisis (Discomfort Index Crisis) is AETA's fifth single. It is sung by Kagamine Rin, and was released in celebration of her and Len's fifth "birthday".
Fukaishisū Crisis (Discomfort Index Crisis) is AETA's fifth single. It is sung by Kagamine Rin, and was released in celebration of her and Len's fifth "birthday".