Where light is born - Todoroki x oc

Ever since she was a child, Tsuki Akishi dreamed of becoming a hero.
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With a heart full of courage and a quirk that crackles like lightning, she enters U.A. High to chase the dream that her family once held.
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But the path to becoming a hero isn't easy-between fierce battles, hidden fears, and a quiet boy with fire and ice in his eyes, Tsuki's story is just beginning.
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What if the spark she carries could ignite more than just electricity... but also hearts...?
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⚠️Warning: this story is not welcome to offensive criticism.
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^_^
For more context, Tsuki entered the UA thanks to her parents.
Aimi Akishi and Osamu Nigure, who were in different classes:
Aimi: class 1-B
Osamu: 3-A
They met at the sports festival, and with new feelings between them, they became a lovely couple and started a family:
Aiko Nigure, Tsuki's older brother, apparently had two gifts due to his seductive personality: electricity and seduction.
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He encouraged his little sister to become a heroine one day, and Tsuki dreamed of being one.
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💥💥
But the QUESTION!:
- How does Tsuki have all blonde hair if her parents don't have that shade?
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Well, a little bit does, but that's a lesser probability. O_O
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