MCs with scary, ugly & weird faces

Ling Er's hand in marriage is the prize in the competition set up by her wealthy father, however, none of the men entered know her horrible secret. Our hero through a string of events, ends up falling out of the sky and miraculously beats out the competition in one swoop. Just when he thought everything was going to turn out great, he was stunned by the reality.
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Bullied due to his extremely unattractive features, Grotie has given up on himself. However, he is determined to marry a beautiful girl so that he can leave behind beautiful children. When a contest opens to win the hand of the lovely Princess Allura, Grotie gives his all. Little does he know, the princess is also fighting alongside her suitors in disguise, to prove to her mother she can fight her own battles.
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Bianca is the last remaining "ugly" witch in the Underworld. Will she muster the courage and self-confidence to find love?
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○ : sexual assault??? (that scene confused me), incest (possibly pseudo-incest and their blood relation is extremely far apart; unclear)

Conjoined twins Yudy and Yucy are as different as possible. Older Yudy is intelligent but ugly, as her nutrients are used up by her beautiful but simpleminded sister Yucy. Loving and hating so deeply, where does one girl begin and the other end?
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Shiina Koyuki is helping out at her parents' nursery school since she loves children. Unfortunately, they are completely terrified of her. Enter Haru, who is adored by children, who he absolutely hates.
(ch 2)
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○ only children are scared

Clumsily, he panicked and hid the flower bouquet behind his back...
This is what happens one day when ordinary girl Kogure Nao is summoned by the scary-looking Onigase-kun. However, she is shocked when he says to her: "Please date me before you marry me!" Nao is too shocked and terrified to say no... what will come of their relationship?
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Hosaka Taihei is a handsome medical examiner and he just switched jobs...to be a nursery teacher!! It's the first time he's experiencing difficulty in keeping a conversation with two years old. Isn't it cute to see an evil faced new nursery teacher? The start of a complex love begins in a kindergarten!
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Recently rejected Saki Momota is having a hard time getting over her first love. While picking up her younger brother from school, Saki bumps into Akai Ryuuichi; the class delinquent who’s rumored to be able to shoot lazer-beams from his eyes. Could this day get any worse?
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When our protagonist came to an abandoned house to commit suicide, the house owner may have something to say about it.
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Kaguya Shinomiya and Miyuki Shirogane are the members of the Shuichi'in Academy's student council, asserting their positions as geniuses among geniuses. All the time they spend together has caused the two of them to develop feelings for each other, but their pride will not allow them to be the one to confess and become the submissive one in the relationship! Love is war, and their battle to make the other confess begins now!
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○ All to an extent