Dazai and Chuuya had a mission, where they need to get at first information to fulfill the mission. So they went undercover to a party where they know that someone has the information they need. Chuuya, went to mentioned person and started flirting with them, to get the wanted information. Just as he took a sip from his wine, he noticed Dazai's staring at him. It was a mix of angry and annoyed, Chuuya didn't like that gaze at all. The person started complimenting Chuuya, which only made Dazai's gaze colder. He was extremely jealous right now.