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This kind of thing happens only at about 3 am, for two reasons. (1) his brothers are asleep by then and he would die if anyone caught him doing this. (2) it’s the time of night where the Bad Feelings™️ kick in and he has an unshakable feeling that can only be assuaged by checking that his family is safe. He’s either already awake, still at work, or waking up from sleep because of this icky feeling.

The first one he checks in on is Leviathan. Levi is usually the only one of his brothers who is also awake at this time, so he starts with him. He scolds him for being awake at this hour (hypocritical much?) and gently threatens him that he better be asleep by the time he comes back. When he returns to Levi’s room after checking in on everyone else, the third-born is passed out, clutching a Ruri-Chan body pillow for dear life. Lucifer places a kiss on his forehead, and the otaku seems to blush at the contact, even in his sleep.

Next up is Mammon. Even when he’s out late, he’s usually in bed by this time of night. Although at this point he’s spent of all his energy, and can be found face-down on his bed in his clothes from the day and spread out over the sheets. Lucifer sighs and helps his little brother out of his shoes and his jacket. He tugs at the sheets under his body and places them over him. He gently brushes his haphazard hair out of his face and presses a kiss to the crown of his head. When he’s feeling especially sappy, he’ll gaze lovingly down at the demon, remembering when he was just a small angel, Lucifer’s first little brother, and he wonders where the time went.

Lucifer goes to Satan’s room next. Most of the time, Satan is fast asleep, since he realizes being well rested helps him manage his anger better throughout the day. But often times he’s also stayed up late to finish a book he simply couldn’t put down. He’s sitting up against his headboard, head hanging low over the book that has fallen on his chest. Lucifer carefully (with gloves of course) removes the book from Satan’s hands and places it on his nightstand, careful to mark his place. He guides the demon down into the bed and tucks the sheets over him. He kisses him on the top of head, sometimes whispering on a particularly emotional night “goodnight son.”

He makes his way over to Asmodeus next. Same as Mammon, Asmo is usually asleep at this point even if he was out partying. The difference is that he still took the time to get into his pajamas, do his face care routine, and wrap himself tightly under the covers. Lucifer grins cheerfully at his brother, his face as graceful as ever as he dreams peacefully. Lucifer plants a kiss onto his cheek. Asmodeus tends to run hot at night, which will wake him up and make it hard for him to fall back asleep. So Lucifer unwraps him from his sheets and pulls them down just below his chest. On particularly stuffy nights, he’ll also open his window to let some fresh air in.

Then, Lucifer ventures into the twins’ room, stopping first to check on Beelzebub. Freshly asleep from his midnight snack run, Beel snores loudly. Lucifer fights back a chuckle at the noise and takes out a handkerchief to clean off crumbs from Beel’s face. He’ll sit on the edge of his bed for a minute, stroking his forehead with his fingers. He knows the poor demon is often wracked with nightmares. He doesn’t have Belphie’s power of dream magic, so he hopes that this little gesture will help soothe his baby brother’s pains. Beel often leans into Lucifer’s touch, a small smile spreading across his features. He kisses Beel on his forehead before moving onto his twin.

The last brother up is Belphegor. It’s often a challenge to find him, sometimes he’s in his room, sometimes in the attic, sometimes on top of the fridge, sometimes in the laundry room on top of the warm dryer. But wherever he is, Lucifer usually brings him back to his bed and tucks him in before giving him a kiss on his nose, like young Belphie used to do to him in the Celestial Realm. On the really rough nights, especially after letting him out of the attic, Lucifer takes a moment to lay his head against his youngest brother’s. Just basking in gratefulness that his brother is free and alive and relatively happy with his family.

MC doesn’t really fall into an order. If they’re in their bed, Lucifer checks on them last. Often times though, they can be found in one of the brothers’ beds, especially their favorite. His heart warms at the sight of MC, safe and happy with his brother(s). He feels especially warm if he happens to find them in his bed. He gives them a gentle kiss or two on their forehead, and renews the protection spell he already has in effect on them.

Once he’s finished with his rounds, he finally feels settled enough to get back to work or sleep. Unbeknownst to him, everyone in the HoL knows about Lucifer’s routine. But they wouldn’t dare say anything, they don’t want to lose this little bit of affection from their beloved big brother.

Also, at some point, every brother does this, with Mammon and Beel doing it the most often aside from Lucifer. Mammon is too scared to do it to Lucifer though, whereas Beel will straight up crush Lucifer in a hug. Lucifer pretends to hate it.

Honorary mention: whenever Luke sleeps over, he also gets a goodnight kiss from Lucifer. He’ll usually find the angel in bed with MC. Sometimes he’ll also be sleeping with Beel or Mammon or in very very VERY rare occasions when the former three aren’t around, Lucifer will let him sleep in his bed (neither Luke nor Lucifer will ever admit it). Most of the time, however, Luke is the first to get a goodnight kiss because he falls asleep by 10 pm no matter what and MC demands all the brothers bid him goodnight. Lucifer’s heart warms whenever he sees the sleeping angel. Luke reminds him of his own brothers when they were small, cute, loving, and obedient well-behaved.