Cthulhu Gonfalon - Chapter 860 - Vol V Chapter 220

This book is about baby-making.

This book takes you on a tour of one of the most terrifying yet also most mysterious planes in the Multiverse: the Bottomless Abyss. ------------ A Knight, forsaken by his liege, was forced to exile himself to the Abyss. Due to a fortuitous encounter, he obtained the legacy of a Spiritual Cultivator. What kind of story will he encounter? ------------ The setting mixes the backgrounds of editions 3 and 5, adhering strictly to DND settings apart from the protagonist’s profession, but considers readers who have never participated in a campaign, ensuring that everyone can read it without barriers.

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

Set on a giant, almost finished bridge between Sadogashima and Niigata. Abandoned by the government, the bridge, and the giant man-made floating island at the center, has become a city of criminals and societal drop-outs.

Set in the same world as Durarara, but 15-20 years later. There is almost no overlap between Etsusa Bridge and the other novels.