Deaimon Temporada 1 Episódio 5

On a day off from work, Itsuka and Mitsuru run into Nagomus ex-girlfriend, Matsukaze Kanoko, in town. Mitsuru and Kanoko havent met before, though Itsuka knows them both. The three decide to have lunch together. Mitsuru and Kanoko both get excited talking about Nagomu while Itsuka is perplexed by the unusual atmosphere between the two women.