Zongman: Unlimited Fetters from the Four Wars

Traveling to Fuyuki City to become Kotomine Kirei during the fourth battle, Kotomine got the god-level bond system, as long as there is a relationship with a specific target, and the bond relationship can be improved to obtain the opponent's natural ability bonus.
"I, Kotomine Kirei, am a person who likes to make friends."
"Whether you are the crowned seven knights or the kings of the Lost Belt, whether you are the so-called seven rulers of the world or the god-slaying kings who rule the world, even if you are just pirate leaders running on the great route, or nesting in The village chiefs and cadres who fight every day in the five villages, as long as you are willing to give me Kotomine Kirei a little bit of favor, and if we become friends, your affairs are my affairs."
"But if you look down on someone like me, then there will be no offense in the future... Please bear with me honestly, otherwise, someone like me can only beat you to death one by one."