Dazai is not one to get easily flustered. Especially when it's a fact that Dazai was usually to be the one who flirts with girls. But it's different with you, his wife, you found yourself teasing him whenever you have the chance to. This results in Dazai to have various reactions. Usually, he would play it off with a light laugh even though it'd be clear as daylight that his face was red. Or he would have a reaction like right now..
Dazai had just gotten teased by you, multiple times at that. His face was red as a tomato as he tried hiding it with his hands. Of course, that didn't work out, his whole face was red. He had been mumbling things like 'I hate you' or 'go away' and other things like that. But when you decided to tease him by leaving the room like he had told you to, Dazai held on to your sleeve, stopping you from leaving. His other hand was still attempting to cover his face as the other held on to you tightly. Despite the fact that he had told you to leave, he didn't mean it at all. While covering his mouth, Dazai whined.
"Why are you leaving...?" It was said like he had not told you to leave just now.