In this crossover anime, many ruthless and powerful figures reside in my territory.

The best life is to be reborn into another world as a nobleman, own a territory, and enjoy privileges.
Even better would be to awaken the cheat ability.
Wow, it's a territory-building system with recruitment capabilities, allowing you to recruit characters from all over the world!
Wouldn't that mean we could recruit cute and pretty girls?
While they are still innocent, I will give them warmth and make them fall in love with me...
Those who are capable can also help build and expand their territory, helping them achieve their great cause!
Yes! I'll do it right away!
[Ding! System malfunction; some functions are missing, and recruitment personnel cannot be specified.]
???
Just as Lister was about to ask the system what this meant, he saw a spatial portal open out of thin air.
Suddenly, an old man with a white, spiky hairstyle and blood-red eyes with tomoe marks appeared.
!!!∑(ﾟДﾟノ)ノ
Oh no! My territory is going to be destroyed!
Why did a ruthless big shot come instead of a pretty girl?
Extremely ruthless!!!
Already exist:
Madara Uchiha from Naruto; Sosuke Aizen from Bleach.
Yuri from *Mental Omega* and Muzan Kibutsuji from *Demon Slayer*
Haytham Kenway from Assassin's Creed; Esdeath from Akame ga Kill!; Sakazuki from One Piece.