Kane Asato

Kane Asato, also known as Break It Down (分解する), is the recurring deuteragonist of the My Future Academia:  manga and anime series.

Personality
Kane appears to be a vain and prideful person, thinking of himself as superior to the rest of his classmates, especially in regards to his Quirk. He exhibits extremely flamboyant mannerisms, is fond of posing, and likes to grab the attention of those around him despite frequently getting ignored by his peers. His expression rarely changes from a closed smile, even while he speaks or gets hurt, and he's also prone to getting upset if interrupted or questioned. Kane's sentences often end with a slow hiss, indicating a sassy tone. He also tends to play up his Italian heritage, occasionally implementing Italian words into his sentences.

However, this persona is shown to be mostly a facade, as Kane holds severe insecurities about his Quirk, and, in reality, he doesn't see himself as above anyone else. In fact, he appears to think of himself as different from everybody, due to the "defective" Quirk he was born with. Kane has been struggling with this since his childhood and wishes to become "normal" one day.

Though he has a desire to have friends, Kane rarely has the confidence to act upon it due to his insecurities alack of social skills; he can unintentionally come off as "creepy" to others when he genuinely means well. Instead, he opts to self-isolate, seen through his eating of school meals alone rather than with the members of his class and general avoidance of most social situations. Despite this, he's been shown to be rather observant, able to pick up on Mina's crush on Chino before he even realized it herself.

Kane does possess a compassionate side and is shown to sympathize with Genki Ito, due to the both of them having what he perceives as highly self-harmful and uncontrollable Quirks, although the way in which he displays this sympathy initially startled Genki. Genki has stated that he’s never been able to read Kane due to his unpredictable nature, although he still ended up befriending him. He is also kindhearted, as shown in the Provisional License Exam when he was willing to throw away his chance at a license to give the chance at passing.

Kane is also easily frightened by danger and prefers to hide rather than fight, though he can still help out a friend as long as he remains safe and isn't above sacrificing himself, highly contrasting his usual self-centered attitude.

Quirk
Chest Laser (胸部レーザー): Kane's Quirk allows him to shoot a powerful sparkling laser cannon from his chest. It is so powerful, it can blast through 2 metres of solid concrete. If he fires the laser for more than 1 second at a time, he will suffer intestinal distress.

This has been explained due to a birth defect, in which Kane has very little control over his Quirk and needs to wear a special belt to compensate. However, due to his training in U.A., the negative side-effects of his Quirk have been greatly reduced.

As part of his training, Kane continuously fired his Chest Laser to build up his body's endurance, increase the range of his blasts, and gain the ability to use his blast even when undergoing stomach pains.