Eijiro is a boisterous and outgoing guy with a fondness for the concept of manliness, often using the terms "manly" and "unmanly" to describe things and people he does or doesn't like, respectively. Those who showcase a noble, brave, and/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 himself is determined and selfless, bravely putting the safety of others before himself. He is also a big fan of Crimson Riot, a retro hero that he takes inspiration from, including personal values and his own hero name.
 
Eijiro has stated more than once that he does not think very highly of his own Hardening Quirk, thinking that it lacks the flashiness usually found in the Pro Hero scene.