DenBeam

DenBeam is the slash ship between Denji and Beam from the Chainsaw Man fandom.

Canon
Denji and Beam's first seen interaction is when Makima assigns the two of them as teammates, noting that Beam specifically asked to partner up with Denji. Beam then leaps from the ground lunging himself towards Denji, to which Denji punches him in response. Beam is quite happy to partner up with Denji and continuously refers to him as "Lord Chainsaw", while Denji seems somewhat put off by him.

This dynamic continues as Beam is swimming through the floor alongside Denji when they're out on patrol and becomes overjoyed when it rains. Denji tells him to stay out of sight because he'll cause a scene otherwise.

Right before Reze attacks Denji on their date, Beam snatches Denji as leaps away from the scene. Beam recognizes that Reze is the bomb devil because of her smell. Reze transforms and quickly catches up to them. Beam escapes with Denji as group of civilian hunters distract her. He takes Denji to an Anti-Devil 2nd division training center and informs Aki of the devil. They try to escape by car, but Reze quickly catches up to them.

After Denji is defeated in his battle against Reze, Beam and the Angel Devil heal him by giving him blood. Beam then reveals how the Chainsaw Devil used his Chainsaw Chain to move from building to building. Denji then makes Beam transform into his full shark form and mounts him, using his chains and reins, instead of how Beam recommended. They manage to wound Reze, though she recovers shortly after. As Reze attacks from above, Beam puts Denji in his mouth to protect him, getting incapacitated subsequently.

After Denji dives into the water to defeat Reze, Beam dives in after them and rescues them both by taking them to the beach. When Reze breaks Denji's neck and leaves, be begs Beam to rev his engine and heal him.

In the International Assassins arc, Beam is ordered by Makima to assist Denji, which he eagerly agrees to do. Beam then appears in the department store and rescues Denji from Long by bashing in her in the back with his head, roaring at her to not touch "Lord Chainsaw". Beam warns denji to not use his Chainsaws so he can save up blood, but he trips over a doll's body as their fleeing. Denji calls him out for being clumsy but winces as he steps on a nail. This triggers the Curse Devil who then picks Denji up and causes him to bleed profusely. Beam watches in shock until Tolka stands up and kicks Beam in the face.

Denji and Beam are then dragged alongside everyone else in the department store to Hell. The Darkness Devil arrives and slashes off the arms of everyone present. Beam picks himself up and feeds his blood to Denji and attempts to revive him by pulling on Denji's chainsaw cord before the Darkness Devil points in Beam's direction and cuts him into pieces.

Fanon
While this ship does not enjoy immense popularity within the fanbase, it does have it's own share of fans. This ship is viewed by many as a crack ship, with the creation of "Fanon Beam", portraying Beam as a yandere, doing horrific things to those who insult Denji in any way. While many do not take it seriously, there are some that find the ship genuinely endearing, with Beam's extreme devotion to Denji and the concept of Denji possessing a queer identity.

Currently, DenBeam has 43 works on AO3.

Fandom
FAN FICTION