Samejima, Ranmaru

A kendo prodigy nicknamed the "White Devil" of kendo. Kendo has always been a family tradition, and he has practiced it for a long time. He ranked at the top of every national tournament he entered, earning his title due to his speed and strength.
However, until middle school, he did not really have any friends. He devoted all his time and energy to kendo. That changed when he met Kei, who fell immediately in love with him. At first, he was taken aback by Kei's straightforwardness and felt thoroughly annoyed and disgusted by him. Yet, he was also impressed by Kei and his rusty kendo skills. He invited Kei to his house to practice, and afterwards, they shared a kiss. Although he did not admit it at first, it left quite an impression on him.
In high school, he served as captain of the kendo team. Kei and he confessed their feelings for one another and took their relationship to a physical level. However, not long after he entered the kendo championships, Kei learned that his mother had died. Seeing his lover's distress, he vowed to always protect him. He kept his promise in a significant way when a yakuza hit man tried to run over Kei with a car and Ranmaru pushed him out of the way. The assault left Ranmaru paralyzed on his right side, and he believed he could never do his beloved kendo again. But after undergoing extensive physical therapy with Kei at his side, he managed to regain movement in his limbs, with a promising outlook for kendo once more.
Ranmaru is completely shy about his feelings, but there is no denying he loves Kei. He has only been able to say the words 'I love you' to Kei once, but luckily Kei understands Ranmaru enough to know how he feels. Like Kei, Ranmaru wants no part of the yakuza life that nearly killed him, though, as with Kei, the yakuza life forces its way into Ranmaru's. However, he takes kindly to Kai, although he tries to draw the line regarding the younger man's affections. He wants Kei and Kai to have a brotherly relationship without the two of them harboring such strong animosity towards one another.