Quirk Marriages

Quirk Marriages (個性婚) are marriages that began to appear after Quirks began to manifest in society, during the second and third generation of Quirk users.

The purpose of these marriages was choosing mates for the sole purpose of choosing and/or enhancing a specific Quirk to be inherited down the bloodline, as a child will either inherit the fathers Quirk, the mothers Quirk, or a new Quirk that's a combination of the two.

Known Quirk Marriages and Resulting Children
Enji Todoroki and Rei Todoroki
 * Toya Todoroki
 * Fuyumi Todoroki
 * Natsuo Todoroki
 * Shoto Todoroki
 * Half-Cold Half-Hot: A Quirk that combines Enji's Hellflame and Rei's unnamed ice Quirk.