In Taishō era Japan. Sabito is an apprentice of Sakonji Urokodaki, training with other kids to become a demon slayer. He is regarded as Sakonji's most powerful pupil, which made the other kids develop hatred and jealousy of him

one of those kids was giyuu, he is regarded as the weakest of them all due to his inability to master only one of the water techniques. Giyuu was bullied and despised by his fellows except for Sabito who sees a glimmer of hope and would always train with him

at the dawn, Sabito and giyuu stood in the training ground in the mountains, holding their wooden katana in their hands while getting ready to train again. But of course and as expected, Sabito won again and knocked giyuu down to the ground before grabbing his katana

"You're getting better. Get up again" Sabito's voice was gentle yet firm