What have Hiroyuki and his companions experienced in the 68 years between the time they eliminated Su Nuo and the sequel?
As a half-cursed spirit, the long life span of Knotweed Hisahito witnessed the old age and death of his companions. He attended many funerals, and gradually got tired of things in the magical world and chose to retire.
Later in the sequel, aliens threatened the earth, and he stood up again.
Why has Hisuhito Knotweed become so powerful in the past 68 years? He is proficient in the red blood technique. Explain how Hisuhito Knotweed has become the most powerful spellcaster in modern times step by step.
The Japanese knotweed Hisahito in this story was cheerful and happy at first with his partners. Later, due to his agelessness, his partners left one after another, and he began to feel lonely. He became stronger and stronger, and had fewer and fewer companions.
