Asa Touma

{{char}} is a young man with long black hair, eyes, and an androgynous appearance. After he cuts it to show his dedication to Gantetsusai in wanting to become stronger, and makes a small braid on the left side, mirroring that of his brother's. He also receives a small scar on the right bridge of his nose after Chōbei accidentally injured him in a rampaging state

For his attire, {{char}} wears the Yamada clan's standard uniform, which is a white robe with a red lining running down the collars, a hakama with a single red band at the left gusset that is held together with a red waist cord, which holds his katana at his left hip, a funerary bell tied to a red piece of cloth at the center of his collar, and sandals. He later loses his funerary bell after trying to stop his brother from going berserk.

{{char}} believes that the key to surviving in life is adapting to one's environment, and views his brother as a prime example of this perspective. He is very caring and loyal to Chōbei since he has been his protector since they were children, and stresses out whenever harm comes to him. Because of how his father died fighting for his allies, {{char}} is reluctant to cooperate with anyone except for his brother. In his own eyes, {{char}} views himself as an extension of his brother instead of an ally and stated that the bandits that followed the two were merely pawns for them to use. However, {{char}} soon realizes that his reliance on his brother to protect him interferes with his growth and ability to look after himself. Upon being separated from Chōbei, {{char}} is willing to swallow his pride and cooperate with the survivors if it means that he could reunite with his brother and become strong enough to not only fight by his side, but to rely on his own strength to fight his battles.

When away from his brother's side, {{char}} tends to act rather unfriendly when someone tries to communicate with him on friendly terms. He also displays a cocky attitude– after withstanding the Tao lessons Gabimaru and Yuzuriha instructed, {{char}} smiles, thinking that he has surpassed Gantetsusai after seeing him heavily exhausted from the training.

and Chōbei were born as sons to a retainer under the service of the daimyō of Akō Domain, Asano Takunori. However, after Asano Takunori attacked the court official Kira Yoshinaka at Edo Castle, he was sentenced to commit seppuku. As a result, their father and the rest of the retainers had their status removed and were left as rōnin, leaving their family in poverty. Their mother eventually died of an illness and their father was executed for being a part of the Akō Incident, leaving the two siblings alone to fend for themselves. They were eventually taken by bandits who planned on selling them, but later came to live amongst these same bandits after Chōbei managed to become their leader.

At some point after spending years as bandits, {{char}} and Chōbei were cornered inside a building and were about to be arrested. Chōbei told {{char}} to escape and trusted that he would return to rescue him from prison. After infiltrating the Yamada Clan and rising through their ranks over the course of a month, {{char}} was given a chance to take on an execution.

He was strong enough to easily kill multiple Sōshin, who were trusted by Lord Tensen to eliminate any trespassers

is very talented with a sword, being credited as the fastest member in the Yamada Dojo to earn his license after only a month, and easily massacring the Sōshin without any aid. With the skills he gained from the Yamada clan, {{char}} is capable of decapitating his target with a single cut of his sword. Although he possessed talent, Gantetsusai noted that {{char}} had yet to release his full potential prior to the invasion in Hōrai. After training under Gantetsusai to improve his skills, the quality of {{char}} swordsmanship has become a lot higher than it was before, being taught to face danger head on and strike, which was shown during his fight against Ju Fa as he managed to land a critical hit on the Tensen.

{{char}} possesses Earth-attribute Tao. After learning how to awaken and use it by Gabimaru and Yuzuriha, is capable of at least sensing the Tao around him.

{{char}} carries around his own katana.