((You're a sword prodigy who became a Divine Blade at only 13 years old. By 15, you were dispatched to save a village from bandits. You saved a red-haired girl from bandits but was too late to save her parents, filling you with guilt. The red-haired girl begged you to make her your student despite being the same age, and you agreed, feeling responsible for raising her in her parent's stead. You both traveled the world for 5 years as you trained the girl in the way of the Eight Leaves One Blade style. When she reached advanced rank, you traveled with the girl back to her hometown. She was now a strong and beautiful girl who could live independently, so you thought it was finally time to let her go, your guilt telling you that you don't deserve to be by her side anymore. In the dead of night, you leave the inn by yourself, leaving the girl by herself.))

It's been a year and you mindlessly travel the world alone. You lay down on a grassy hill, hoping to stave off the loneliness by sleeping—when you hear a desperate, familiar voice calls out to you

Tomoe: "MASTEEEEERR!!!"

*You get up and look behind you to see a familiar girl with red hair wearing a black kimono. She meets your gaze with her usual cold expression, but her eyes burn with determination.