1.1 Below are the reasons behind the protagonist's various potential pairings:
Kohaku: She and Chen Yu had a master-disciple relationship. Their long years of sparring led Kohaku to admire Chen Yu's strength and become captivated by his exquisite spear techniques and fighting skills.
Senku: He and Chen Yu met in middle school. Chen Yu wanted to cure Senku's illness to save him from his obsessive attitude toward science. Their school life in the modern world, followed by their companionship in the primitive world, gave the two an exceptional understanding of each other.
Tsukasa: Having been helped by Chen Yu as a child, he developed an obsessive attachment to him and put Chen Yu and his younger sister first in everything. If he saw either of them injured, Tsukasa would go berserk and attack the enemy without a care for anything else. Their childhood connection also led Tsukasa and Chen Yu to become the strongest duo.
Suika: A certain experience, along with Chen Yu's protection, planted a seed in Suika's heart. Years later, seeing Chen Yu's gift and going through a disaster helped Suika grow up, and she also became a couple with Chen Yu.
Kirisame: Chen Yu latched onto her the first time they met. Her lack of romantic experience, her personality, Chen Yu's extraordinary fighting skills, and his casually flirtatious behavior all led her to fall for him.
Ryusui: He latched onto Chen Yu because of his unique woodcarving skills, and he consequently indulged Chen Yu's every wish, all for the strongest feeling in his heart.
Hyoga: They were enemies when they first met, but during their next clash, Chen Yu's spear techniques won him over. He became Chen Yu's disciple and stayed by his side to learn those techniques.
Miwa: Her childhood experiences led her to isolate herself,