Ultra Maniac - 1x21 - Season 1, Episode 21- Followmy.tv

Nina finally figures out Kaji likes Ayu. So she sets them up to meet at the library. Kaji tells her but Ayu first declines because of her misunderstanding ( Nina discussed his "dark side" and Ayu thought Nina liked him when Nina murmured Kaji's name in her sleep ). So Nina comes to the rescue and tells Ayu that she doesn't like Kaji, she also tells her that she likes someone else. So Ayu runs to tell Kaji that she likes him. So now they're together.