Koi-suru otoko-tachi

An omnibus consisting of two parts. 1) Ototo no Koibito: Takeo is a graduate student who lives with his sister Momoko. He is hiding his relationship with Riku from her which results in trouble when she starts getting interested in Riku. Takeo gets jealous over this. 2) Aitsu no Kodomo: Akihiko is an officeworker who takes care of a child himself. It is not his child but the child of his crush Kazuya, a straight man, who has no time to be a parent. Akihiko gets frustrated over the lack of affection from Kazuya. One day a friend of Akihiko called Yuuki delivers him a gay AV with Kazuya in it which he watches. Akihiko is called by Kazuya who mentions marrying a new wife.