Movies Like Romantic Killer

If you liked Romantic Killer (2025), a science fiction and comedy movie directed by Tsutomu Hanabusa, here are 20 movies with a similar feel, based on TMDB's recommendations. Each one links to its cast, trailer and where it's streaming.

1
Death Note: L Change the WorLd (2008)
★ 6/10Also science fiction
"The human whose name is written in the Death Note shall die." After making the hardest decision ever, another serious case confronts L. There are only 23 days left and without his best partner Watari, L has to solve…
2
Stewie Griffin: The Untold Story (2005)
★ 6.9/10Also comedy and science fiction
The maniacal baby of the Griffin family, Stewie, meets his future self. In doing this he discovers that his future image is not what he has anticipated because of a near death experience.
3
Iron Man & Hulk: Heroes United (2013)
★ 5.9/10Also science fiction
The Invincible Iron Man and the Incredible Hulk must join forces to save the Earth from its greatest threat yet! When two Hydra scientists try to supercharge a Stark Arc Reactor with Hulk's Gamma Energy, they unleash a…
4
Groot Takes a Bath (2022)
★ 7.1/10Also comedy and science fiction
Everybody needs some alone time to relax and wash up, but things go quite differently when you’re a Flora Colossi toddler.
5
Crayon Shin-chan: My Moving Story! Cactus Large Attack! (2015)
★ 7/10Also comedy
The Noharas must survive a hoard of man-eating killer cacti after Shin-chan's father relocates the family to Mexico for work.
6
Henry Danger: The Movie (2025)
★ 7.7/10Also comedy and science fiction
Henry Hart meets a superfan—eager to fight crime with Kid Danger—who comes into possession of a device that can open up alternate realities. Facing a wild ride, Henry will need his best friend Jasper and his new…
7
Monkey Business (1952)
★ 6.7/10Also comedy and science fiction
Research chemist Barnaby Fulton works on a fountain of youth pill for a chemical company. One of the labs chimps gets loose in the laboratory and mixes chemicals, but then pours the mix into the water cooler. When…
8
Groot's Pursuit (2022)
★ 7/10Also comedy and science fiction
Groot investigates a spooky noise that’s been haunting the Quadrant, which leads to an intense dance off.
9
Bleach the Movie: Memories of Nobody (2006)
★ 6.9/10Also science fiction
In Karakura Town, unidentifiable spirits begin appearing en mases. While attempting to deal with these strange souls, Ichigo Kurosaki and Rukia Kuchiki meet Senna, a mysterious shinigami who wipes out most of them…
10
Iron Man: Rise of Technovore (2013)
★ 6.2/10Also science fiction
Iron Man enlists the help of ruthless vigilante the Punisher to track down War Machine's murderer. All the while, he's being pursued by S.H.I.E.L.D. agents Black Widow and Hawkeye, who suspect his involvement in a…
11
Groot's First Steps (2022)
★ 7/10Also comedy and science fiction
Following the events of “Guardians of the Galaxy Vol. 1,” Baby Groot is finally ready to try taking his first steps out of his pot—only to learn you have to walk before you can run.
12
Secret Society of Second-Born Royals (2020)
★ 6.6/10Also comedy
A rebellious teenage princess discovers she has superhuman abilities and joins a secret society of extraordinary second-born royals tasked with protecting the world.
13
Eden of the East Movie II: Paradise Lost (2010)
★ 6.7/10Also science fiction
Accused of terrorism and feeling the heat, Saki's high-tech crew is in the crosshairs. Meanwhile, the shroud of mystery covering Takizawa is lifted as he and his fellow Selecao make their final moves. Every game must…
14
Doraemon: Nobita's New Great Adventure Into the Underworld - The Seven Magic Users (2007)
★ 7.2/10Also science fiction
Nobita wishes the world into a magic-reliant one with Doraemon's Moshimo-Box, and, along with his friends, must stop an asteroid from hitting the planet with help from a sorcerer-in-training.
15
Doraemon the Movie: Nobita's Little Star Wars 2021 (2022)
★ 6.6/10Also science fiction and comedy
During summer vacation Nobita picks up a small rocket containing Papi, a palm-sized alien president escaping rebels on his home planet Pirika.
16
My Hero Academia: You're Next (2024)
★ 7.3/10Also science fiction
In a society devastated by the effects of an all-out war between heroes and villains, a mysterious giant fortress suddenly appears, engulfing towns and people one after another. Then, a man reminiscent of All Might…
17
The Little Guy (2022)
★ 7.3/10Also comedy and science fiction
Groot discovers a miniature civilization that believes the seemingly enormous tree toddler is the hero they’ve been waiting for.
18
Regular Show: The Movie (2015)
★ 7.9/10Also comedy and science fiction
After a high school lab experiment goes horribly wrong, Mordecai and Rigby must go back in time to battle an evil volleyball coach in order to save the universe — and their friendship.
19
The Bed Sitting Room (1969)
★ 5.9/10Also comedy and science fiction
In the hazy aftermath of World War III, the fallout from a 'nuclear misunderstanding' is producing strange mutations amongst the survivors, and the noble Lord Fortnum finds himself transforming into a bed sitting room.
20
Robot Chicken: Star Wars (2007)
★ 7.2/10Also comedy and science fiction
A series of 30 sketches, following the hilarious antics of various characters from a galaxy, far, far away.