What if Izuku has a quirk that is the combination of both his parents. A quirk that absorbs heat and release it as a blast.
Izuku's quirk have a similar powers as Saten from anime Needless.
Absorbing the heat from an object or attack, causing it to freeze.
It allows the user to absorb thermal energy and convert it into a energy blast capable of great destructive effect. The user can be seen controlling the entire process of thermal energy conversion from heat absorption to produce Ice, gust of air created through thermal manipulation to the final Destructive Energy Blast.