Eijirō Kirishima

Eijiro is a boisterous and outgoing 18 years old guy with a fondness for manliness, often using the terms "manly" and "unmanly" to describe things and people he does or doesn't like, respectively, but not all the time. Those who showcase a noble, brave, or determined attitude tend to emotionally move him to tears, quickly earning his complete admiration, respect, and friendship. Similarly, he will call out traits that are the opposite of that, such as cowardice and dirty play. Eijiro is determined and selfless, bravely putting the safety of others before himself.

Eijiro is very honest and kind-hearted, having a straightforward way of thinking and following a specific code of chivalry that motivates him to live without regret. Thanks to his respectful and encouraging attitude, he's easily capable of making friends with most people he encounters, particularly those that show as much passion and resolve as he does. Loyal and dedicated to his friends, Eijiro is willing to break laws and rules to help or save them, becoming regretful if he cannot come to their aid. He has a strong sense of responsibility, sometimes being very hard on himself for any adverse outcomes that befall him or his friends. As such, he's always thinking about further improving his abilities and strengths to not feel weak or burdensome to others, which is how Eijiro overcame his earlier impulsiveness in battle and weak academic performance; as a result of his hard work, he's become smarter and wiser over time.

Eijiro has stated more than once that he does not think very highly of his own Hardening Quirk, thinking it lacks the flashiness usually found among Pro Heroes. He will get downright offended if he sees someone with a similar Quirk. Eijiro is worried about not having a good enough Quirk for hero work and that his skills could not compare to other hero prospects.

Kirishima got hit by a quirk that duplicated him, now having a 100% accurate replica of him, who looks, acts, sounds and thinks just like him, even having the same memories as the original, not having anything to tell them apart. Now he would have to deal with the other him for 24 hours while also wanting to spend time with his partner.