Absolutely Not. (Shinkami)
-Shinsou POV-
From the moment Shinsou woke up on his 5th birthday with drawings all over his arms, he hated his soulmate. Of course, he didn't know it was his soulmate that had drawn them. The boy had just assumed that another kid in the foster home had done it while he was asleep. "More than likely Mitsu," Shinsou had thought.
When no one would confess to having drawn on his arms, he was extremely confused. People didn't usually lie to him. Why would they? He had a quirk that could get them to confess to anything within seconds. He didn't learn until a week later that he had a soulmate.
He was sitting in class, only partially paying attention to the math lesson. He felt a tickling sensation on his lower arm. He looked at his arms as pen lines began appearing and connecting themselves, seeming to be creating a picture. He had continued to watch the lines while the class continued. As the class ended, the lines had created a drawing of a lion (a pretty good drawing if you asked him).
After class he had told his favorite teacher what had happened. Ms. Amai had seemed confused at first, her brows furrowed creating a line on her forehead as she looked at the 5 year old. After a couple of seconds her expression softened and she gave the boy a wide smile.
"Well, that is probably your soulmate bond Shinsou," the woman had said. "Soulmate?" Shinsou said seeming confused. He had seen several soulmate bonds before, none of them had involved animals appearing on your soulmates arm though. "Yes, any mark anyone makes on your body with a pen will appear on your soulmates body, and vise-versa," she said, still smiling.
Over the years he slowly learned just how persistent and annoying his soulmate was. He thought this, because no matter how much he ignored the person, no matter how he never answered their questions or told them his stories about his day, they still talked to him day after day.
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-Kaminari POV-
Kaminari had known what soulmates where just about his entire life. He knew from the moment the sun rised to the moment it fell, that someone was supposed to love him because the mark on his shoulder told him so. Kaminari didn't know exactly why the marks existed at first.
When he moved in with his best friend, Mina, and her parents though, he quickly learned. When soulmate bonds first came into existence, all the advanced soulmate bonds made it hard for you to know if you had a soulmate. Over time they advanced, you would know if you had a soulmate or, multiple. The sun meant your soulmate was awake, the moon meant asleep. He also learned that Mina's dad really liked soulmates, and had the "Perfect Matchmaking Skills" (his words, not Kaminari's).
It took him a while to find out what his soulmate bond was. He had to go to a specialist. He still remembers that short woman walking in with a comedically large clipboard that had his soulmate bond written on it. He didn't hear anything she had said, he was to fixated her cool-looking earrings. (They looked like little babydoll heads). What he does remember though, is Mina's dad getting really excited and talking about it the entire ride home.
The first time Kaminari's soulmate ever responded to him, he was 13. He woke up, wrote the words "Good Morning," on his arm and continued with his morning routine. Just like everyday he brushed his hair and teeth, flossed, ate breakfast and, changed his clothes.
He headed to school alongside Mina. Went through all his classes until lunch. As he sat down at lunch, he wondered what he should say to his soulmate. Deciding that he had nothing interesting to talk about, he takes out a pen and hastily writes "My doctor told me I’m missing vitamin U. Can you help me?” Denki cringed at the words almost immediately after writing them, it wasn't the first time he had wrote a pick-up line for his soulmate (and it certainly wasn't going to be the last), this time the line was just cringe.
How had he even chose that one? Out of all the good (debatable) pick-up lines he had in his few working braincells, he chose the cringiest one. "Of course! I am cringe master Denki Kaminari, after all. Why am I even surprised?" Denki pondered.
He had spent the rest of lunch alone, middle school wasn't a very good time for Denki Kaminari. He spent the rest of his school hours not paying attention to classes (although, he was trying) and doodling instead of taking notes. He knew he was going to regret it later but that's not now so, why worry about it?
He spent the walk home talking to Mina, like usual. While he was walking though, he felt a tickling feeling on his wrist. It was a funny feeling to him, not like a bug crawling on you or, hair getting on your face. He checked his wrist and, under the absolutely awful pick-up line, were the words "Absolutely Not" (in the neatest handwriting ever might he add).
He stopped dead in his tracks, staring at the words. He pinched himself, hoping that he wasn't dreaming. After concluding that 1. No, he was not dreaming and, 2. Mina must be really confused about why he just stopped out of nowhere. He did the most logical thing in this situation, and abruptly shoved his arm in her face.