I'VE BEEN REBORNED!? (KHR x The Royal Tutor crossover)
Tsunayoshi the Vangola Decimo has passed away due to old age and was left to peace leaving the Vangola to his children and being a great man. Or so he thought but apparently fate wanted him to do more by being reborned into the oushitsu kyoushi Haine world as the second prince Xavier Von Granzreich