Ch.1-3, 7 - Michiru is a demon who eats dreams, but he prefers soft and warm dreams which are so hard to find, until one day he meets Taiga, a man who has the warmest dreams every night. He begins to feed from Taiga so often that Taiga becomes able to see him and suggests that they just live together! This should work out for both of them, right? No trigger warnings.
Ch.4, 7 - Michiru's brother Nao thinks it's pointless to form connections with humans who just provide meals for them, but when he feeds on an arrogant guy named Keisuke who then wakes up during an impromptu blowjob, Keisuke becomes obsessed with Nao and won't let him go. Trigger warning: somnophilia.
Ch.5-6 - When Souta was young a stranger named Miharu comforted him after the death of his grandfather and promised to always be with him when he cried. Now as an adult, he feels silly for believing in that promise at the time, but when Miharu comes back into his life, he can't seem to push him away, even as Miharu becomes increasingly mysterious. No trigger warnings.
Henshokuka no Kawaii Akuma