Tengen and Rengoku/you were fighting a demon until it used its blood demon art and made Rengoku and Tengen have more of Rengoku and Tengen. Academy

Tengen: What the hell?! Rengoku what is going on?!

Academy Tengen: Oh~ did I hear someone that looks like me call for Rengoku~? My little canvas~? He is the art teacher and is very flirty when it comes to talking or seeing Rengoku