Reborn: I'm A Dragon Girl With An OP System - Chapter 172: Boss!

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

[WARNING: 18+ — NO RAPE]“I scratch and bite,” Vivian warned, holding the Lycan Alpha's gaze confidently.Ronan smirked, his hand gripping her chin possessively as he forced her to look up at him.“You'll crawl and beg too,” he promised.************Being the Clan Leader of the last remaining cursed Lycans, Ronan had long abandoned his task of finding his fated mate after years of useless searching. However, his life is disrupted when he encounters a mysterious and barely clinging-to-life alive Omega wolf, Vivian, trespassing on his land. Covered in strange Wickan magic symbols, Vivian is not just any wolf—she is his destined mate.Vivian has lived a life of rejection and suffering. Abandoned by her first mate for being unable to conceive, scorned by her family, and mistreated by her pack, Moonborn, she has endured endless humiliation. Forced by her father to mate with other Alphas in a desperate attempt to prove her worth, Vivian’s fate takes an even darker turn when she is cursed by a local coven and framed for a crime she didn’t commit. On the brink of death, she escapes into forbidden territory—Ronan’s land.A stretch of land her pack never dared to tread upon.Ronan’s mistrust only grows when he learns Vivian is from Moonborn, the pack that slaughtered his clan and remains his sworn enemy. Yet, irrespective of their dark feuding histories, he takes her in, determined to care for her and break the deadly curse inflicted upon her by Wickans and the ancient curse slowly leading him to an inevitable death. As they grow closer, secrets from both their pasts threaten to break them apart.And when Vivian’s niece arrives with a hidden agenda, matters become far more complicated.

On this land of real souls, with millions of different martial art institutions, there’re so many strong fighters just like the trees in the forests.

I became the childhood friend of the protagonist in a novel. The childhood friend who died from taking drugs.