Obey me older brothers react to mc being a simp

Lucifer

You stress him out so much

He already has he's brothers to embarrass him,but still, the God, his own Father, decided that it would be a great idea to send him a s/o who would annoy him 24/7 and obliterate he's reputation as The Demon Prince right hand man and the student council

Don't get me wrong though, he loves you, and finds your adoration and love and simping for him amusing.

You, Lucifer and Diavolo, were having a little tea party. Well only you were invited but Lucifer thought it would be a good idea to go along with you, to make sure you don't do anything stupid and to protect you but you dont have to know that. Barbatos was brewing the tea while Diavolo was having a serious discussion about why he hates pickles and how Barbatos kept trying to make him eat it somehow, much to Barbatos' annoyance. Lord Diavolo then changed the subject to Lucifer upon seeing Barbatos, he's butler's annoyed face. And that was your cue, you started ranting about how hot Lucifer was, saying some things about how delicious he looked and that you wanted to gobble him up, which irked and reddend him, "Mc, you shouln't say such thin- " he's words were cut off by Diavolo's laughter and Barbatos' muffled laughters. Lucifer was taken aback for a few seconds and rolled his eyes, continued by Diavolo teasing him about eating him up, "NO! Lucifer is mine and only I should get a taste of him!" You continued shamelessly, which earned you pair of three eyes looking at you with shock. "M-Mc, I promise I will let you, but please, quiet down for now",he spoke calmly. "Yes master". You little brat.

Mammon

Absolutely loves it

You simp for him, and he simps for you

Though you never fail to make him stutter and lose his words.

He especially loves your pet names

Damn right he's your baby

You better not do this for anyone else

People (Levi and asmo) call you 'The simps'

Overall 10/10

Mammon was at your door, busting into your room with an excited look on his face. He was making up a not so wonderful schemes to make more money. He was so focused with he's plan, making sure no one would catch you both, waving his arms around as he explains, you could see his arm as he wasn't wearing his jacket, his muscled arms showing, and his collar loose enough to show off his neck, he was so beautiful effortlessly. Though Mammon was often called ugly by he's brothers, each one of them knew he wasn't, that he deserved to be a model. "Mc, are you listening?" ,he's words called you back out of your little dreamland. "You're so pretty Mammon", you blurted out. His eyes widened and sputtered out nonsence "W-what are ya talkin' 'bout? I mean..'course y-you'd find The Great Mammon pretty!" he stuttered, followed by an awkward laugh to which you cooed at. Seriously Mc, you're gonna be the death of him.

Leviathan

You fluster him way too much

Poor snake boy

Pspspspsps

Kinda relieved cause now he's sure you won't cheat on him

You and Levi were playing games on his room, you both were almost on the boss battle, which is why he was only focusing on the game, too busy to notice your staring. "Levi why are you so handsome?". Notice how I said he didn't notice you before? Well he definitely does now. He couln't form a speech and just blurted out words that made no sense. You slowly reached out and cupped his face, "Your eyes are so pretty, and your jawline are so perfect. The way you smile is adorable and-" you continued. While he, on the other hand, was malfunctioning, you praised and worship every inch of him that he forgot he was insecure about. He fainted when you got to he's bottom parts

Waiter: What can I get for you?

Mammon: Milkshake with two straws.

Mc: Aww babe-

Mammon putting both straws in his mouth: Watch how fast I can drink this