I'm Full of Fighting Spirit Just for Refining Medicine

What? Time travel? Fighting Continent? Three wishes? I want both the Zanpakutō, the Kidō Bindō! Sharingan and ninjutsu are all mine! Yun Yun, Little Medical Fairy, Zi Yan, Ya Fei, those beauties that Xiao Yan has let down! I'm here to give you a warm home! The protagonist Xiao Chen appears to be a 23-year-old otaku who loves all kinds of novels and animations. In fact, his true identity is a top killer who is good at swords. He is named Little Genius and gives himself an extremely average name for every move he makes. Under Xiao Chen's hands, Those who lost their lives all felt the chattering noise at the last moment of their lives. During a mission, they were ambushed. Although they eventually killed all the enemies around them, they died of exhaustion. After death, they did not feel the pain of cold, but came to a temple.