I'm excluding Vil because Vil already knows he is beautiful, so all the Vil simps don't be upset ok. Enjoy :)

Riddle Rosehearts🍓

🍓"!?!?!!?!?!!" Riddle was left stunned at what you had said, and his hair strands jumped up in shock.

🍓Him? Beautiful? That word was never brought up whenever someone would talk about him or mention him. Riddle has been called many things like "smart", "talented", "strict", and cough cough "short" (even though he despises that word), but he has never been called beautiful before.

🍓After Riddle calmed down, he would look at you with judging eyes, most likely thinking you were joking and it was a prank suggested by Ace or Floyd, but as he kept looking into your kind eyes, he realized you meant it truly.

🍓Cue a blushing Riddle, as he looked away from you, embarrassed then looked back at you again: "You are very bold, Y/N. Most people are afraid to say anything to me, yet here you are, casually calling me beautiful."

🍓If you tell Riddle, you will never be afraid of him and will always find him beautiful, yelp good job, you just broke Riddle, as he will turn red all the way up to his ears and neck, and his eyes will become watery, as he will be feeling emotional from your sweet comment.

🍓Everyone in Heartslabyul will notice that Riddle will be in a joyful mood the day after you called him beautiful. He will be smiling more and be less strict with the rules. Heck he even let Ace go with just a warning, instead of collaring him.

Leona Kingscholar🦁

🦁You and Leona were both hanging out near a tree in the botanical gardens, with you reading a book for class and Leona sleeping next to you. As you gazed at Leona's peaceful face, you called him beautiful then went back to reading your book.

🦁Well that woke up Leona from his nap. Leona eyes both opened up in shock and he glanced towards you, not expecting, you the Herbivore, to call him beautiful.

🦁The smirk on Leona's face will be huge, as he reached his hand towards your face, moving your head for you to look at him. "Heh, you expecting to butter me up with compliments, Herbivore? You just calling me that so I can help you with your assignments."

🦁Shaking your head, you told Leona that you were stating a fact and that he really was beautiful. You even said that you found him very beautiful the day you stepped on his tail, yet you didn't say it out loud.

🦁This mans ego was already big to begin with, and you had succeeded in making it even bigger. Leona still had that smirk on his face, but his face was slightly flushed and he was giving you bedroom eyes.

🦁Leona quickly got up off the ground, grabbed you while flinging you over his shoulder like a sack of potatoes and began speed running back to his dorm. Good job Y/N, you have woken the beast and he was going to take his time with you and expects to hear more compliments about how beautiful he is.

Azul Ashengrotto🐙

🐙"CRACK!" Azul glasses had broke the minute you said that comment to Azul as both him and apparently his glasses were in shock from your comment.

🐙Azul was just on his desk, finishing some documents, and you had just walked into the room to give him some tea and then all of a sudden, said that to him.

🐙Azul immediately didn't believe the word that came out of your mouth. He honestly thought the twins had set you up to this as a way to mess with him. Feelings of insecurity began to rise in Azul as he told you not to lie to him, as he was never called beautiful once in his life, especially to how he was bullied during childhood due to how he looked.

🐙You told Azul that you don't joke about stuff like this, as you walk over towards Azul and place your hand on his cheek. You tell Azul that he is beautiful, including his merman form, and he shouldn't believe the hurtful things that he was called in the past.

🐙Azul started to sob uncontrollably at your kind words, as he moved closer towards you and pulled you into a hug, with his head on your chest. Your words had a big impact on Azul as he slowly started to build confidence and appreciate his merform a bit more instead of hating it.

Kalim Al-Asim☀️

☀️"OH THANK YOU Y/N!! YOU ARE BEAUTIFUL TOO!"

☀️Kalim wasn't really fazed by your compliment as he always complimented everyone he met, so it didn't come as much of a shock when you called him beautiful.

☀️Still this adorable sunshine boy was very happy and gave you a giant bear hug, and offered to give you a ride on his magic carpet.

☀️You accepted the offer and both you and Kalim flew around Scarabia. After a while, the both of you stayed on the magic carpet and just hovered above while looking up at the starry sky.

☀️Kalim turned towards you and noticed you were staring at him and he asked what was wrong. Feeling shy, you turned your head away and apologized saying you were staring at him cause he was really beautiful

☀️He blushed this time and felt butterflies in his stomach. Kalim was starting to realized that you calling him that made his heart ache. He hugged you again and gave you many smooches on your face.

Idia Shroud🎮

🎮 "CRITICAL HIT!!!!!!!" Idia had literally clutched his chest and collapsed from his bed in utter shock

🎮you were in Idias room, watching him during one of his gaming streams. You liked watching him play in person because you get to see many of his expressions especially his smile which he didn't always do, and you found his smile very beautiful, but you had accidentally said that out loud in front of him and he had heard you

🎮 "NANI?!? NANI NANI?!?!?!? THEY CALLED ME BEAUTIFUL?!?!?!? OMG THIS IS LIKE THE SCENE FROM AN ANIME WHERE THE UNPOPULAR GUY GETS ASKED OUT BY HIS CRUSH?!?!? THIS CAN'T BE HAPPENING RIGHT NOW!!!"

🎮Idia's mind was racing a thousand thoughts a second, but he eventually snapped out of it when you had tapped one of his legs that was still dangling on the bed, asking him if he was ok

🎮Idia got up slowly like a zombie and sat back down on his bed, cross-crossing his legs while pulling his hoodie up over his head, hiding his face from you. "P-player 2. You can't be serious. Me? B-b-beautiful? No way."

🎮Heaving a sigh, you grabbed Idia's face and told him to look up at you. Shocked, Idia looked up at you, not expecting you to touch him like that. You began complimenting his hair, his face, his smile, his voice and you go on to tell him that he can keep denying he is beautiful but you will continue to call him that no matter what.

🎮His neon blue fire hair started to glow bright pink, as his heart began to skip a beat at your words. You smiled at him and wrapped your arms around him in a hug. Idia stayed still like a statue, but he slowly melted into your hug and gave you a quiet "thank you."

Malleus Draconia🐲

🐲 "....." Malleus was left baffled by your words. The both of you were strolling near an abandoned building, observing the structure and admiring the gargoyles. Malleus was going on and on, taking about how beautiful they were and you had agreed with him, while also saying he was too

🐲Malleus was a crowned prince and also one of the strongest mages in the world, so he is often feared by others for his magic and intimidating aura, but then you, a magicless human, who had just arrived to this world out of nowhere, called him beautiful, without any fear or hesitation

🐲Silence filled the air, as both you and Malleus stared at each other, until you broke it and looked away from Malleus, embarrassed at having said that, but you turned back to Malleus in shock as he started laughing

🐲 "Hahaha, Child of Man, you are a strange one indeed. Never has someone called me beautiful before. It is a very odd feeling, but I don't detest it. Thank you." Malleus made his way closer towards you and patted your head, smiling kindly at you.

🐲Blushing, you looked back at Malleus with a smile and said your welcome. Malleus continued to gaze at you with loving eyes, as he leaned closer and gave you a kiss on the forehead, and then he disappeared, leaving behind glowing fireflies.