Once Human, Now a Parasite - Chapter -1

The status of a wizard is transcendent in all continents and in the universal plane.

Yo, Hi! I’m Frank, I made a deal with a demon to pay me some money for receiving a guest for a few days every week.
I had no idea about what I have done.
On May 1st, Conan ‘the God of Death’ came to my house. I was forced to let him in and we get involved in a criminal case.
On May 8th, Bruce Wayne ‘Batman’ came to me. I was forced to follow him to fight crime.
On May 16th, Hannibal Lecter, The Silence of the Lambs, came to my home. I can only say that I really can’t stand my guests.

- Description from Novelupdates

Death is only the beginning….He is the boss of a small bar. Despite his gentle and amicable appearance, he is actually cold and detached. He was born with the ability to communicate with spirits but sealed it away, unwilling to get involved with the supernatural.She is a rather unqualified lawyer. Timid as a mouse yet hates evil with a passion. Her birthdate is inauspicious but she’s also blessed by Buddha.A weird and bloody case forced them together. Her cases grew more and more dangerous while his sealed abilities awakened and grew stronger. They were initially repulsed by each other, which turned to understanding, getting along, cooperating, and finally a mysterious yet fierce attraction. With the help of a friend, the two of them solve the city’s horror stories one after the other.

Crossing to One Piece world, he became Roger’s younger brother.

Unexpectedly, Gol-D-Roger who was in his fifties had a teenage brother. But he was so weak.

Fortunately, at the age of sixteen, he actually found himself with a possession soul system.

He had attached to the master IP man, also to the White Phoenix and to Ge Nie with his strong ability of the Hundred Step Flying Sword.

If you think that he can only Purchase these? Then you’re wrong!

Pain, Itachi, Ichigo Kurosaki, as long as there is money, any soul can be Purchased.

- Description from Novelupdates