I Am Fighting the Three Kingdoms in Another World

"I traveled through time." "Cow wow!" "Time traveled and became a tree..." "Ah this..." "I have a system." "Cow wow cow wow!" "Three Kingdoms Killing System..." "..." "And the world is going to be destroyed, and I still want to save the world..." "You'd better order it!" A different world where magic and supernatural powers are rampant has to be saved by the Three Kingdoms Killing. Is it really okay? ! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.