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Dazai and Chuuya as that one meme where two people are cuddling in bed and then the big spoon rolls over and just drags the little spoon over with them.
When Chuuya is the big spoon he does it in his sleep, flipping over and dragging Dazai like an oversized doll. Dazai being the light sleeper he is, gets woken up by it and is annoyed. But also too flustered that he just got flipped like a pancake to do anything about it.
Until the next night where he purposely cuddles up to Chuuya as the big spoon, being extra loving and snuggly, coaxing Chuuya to doze off in his arms. And then once he's asleep, Dazai purposely tries to roll over and take Chuuya with him.
Only Chuuya's all muscle and while Dazai's not weak, his core strength isn't the best. So he struggles, he gets halfway, onto his back, with Chuuya partly dragged on top of him and realizes he's stuck.
To his dismay, Chuuya didn't even wake up, he just sprawls out on top of Dazai and continues snoring as Dazai has to accept his fate.