Both have a rather large cast of characters which are still nicely managed and get a share of screen time and with often changing perspectives and range from androids, forgotten goddesses, mushroom obsessed mafiosi and masked children.
Both surprise with their absurd and sometimes rather dark humour and sudden violence and gore which is toned down in Voynich with the highly stylized art while shown in full detail in the more realistically drawn Dorohedoro.
While both series have a rather bleak setting, one on a post war island where landmines, war orphans are regular and long history of colonial oppression is present, the other in a dirty town where supernatural powered sorcerers hunt humans for fun and zombies rise yearly, they show the light and "cute" scenes, whith themes of friendship, love and family while never being to saccharinely sweet. read more
Both have short stories that can be enjoyed alone and are pretty strange, but Voynich has a slight overarching plot. They have a similar feel to them in writing and storytelling because they have the same author, Sayman Dowman.
It's kind of a stretch to compare these two, but Beastars does have a similar easygoing story with just enough subtle abnormalities and quirks that when you start noticing them you're too much into the world and story to be able to object to them. Both are also works with a very non-targeted appeal. If you don't count furries in the case of Beastars, there's no clear focus group neither of them are appealing to, which makes them go under the radar for many who doesn't have the patience that's needed to get a work like this. That's a shame though because the warm and furry feeling you get here is really great.  read more
What hinamatsuri and voynich hotel share are the warmth and subtle humor with focus on the little things amidst all crazy stuff going on. Both hinamatsuri and voynich hotel are my absolute top favorites, they are manga that may not make you laugh out loud in every chapter, but you might an hour later while thinking back, getting how completely insane the plot actually is.
Both Sunabozu and Voynich Hotel are really hard to explain in one sentence without sounding extremely boring. They share a similar storytelling technique, where the grand narrative is diminished and the plot breaks down into something very mundane, far away from the big stories often told in manga. This is also why they shine so much, without the big plot devices like heroes, villains and good and evil, the small acts and gestures become so much bigger, and the storytelling doesn't need to rely on the typical plot devices to get the story forward.
A bunch of weird characters meet up on a remote island.
Zaregoto is a murder mystery light novel (available used on Amazon for $30) with much more depth.
The Voynich Hotel also has a horror element too but it is more of a slice of life comedy about the occupants of the hotel.
Voynich hotel and Azazel-san have a similar easy going feel to it, and similar type of humour. Also they both contain strong and likeable characters that keep the story together. Azazel-san have a bit more crude humour, but both are absolutely recommended.