"Li Ze, please accept my covenant, with your blood as your guide and your faith as your thread, go forward to protect Hogwarts*Slytherin."
"Salazar Slytherin, in compliance with your covenant, with blood as the guide and faith as the thread, we will go forward to protect Hogwarts Slytherin." Ozawa had completely lost consciousness and said slowly along with Slytherin.
Li Ze: "I have no impression, I don't know, it's not me."
His Highness Slytherin: "Godric write me a notice."
His Highness Gryffindor: "No problem" o(∩_∩)o
Hogwarts: "I'll deliver the message" (*^o^*)
Concept: Li Ze's fantasy journey in Hogwarts