The list predominately fits my taste (Adult Male) but If you would like to add, post a comment below with the titles. If you wish to help me petition a tag for Western Names, post here https://forum.novelupdates.com/threads/create-tags-for-native-and-english-names.160746/#post-7310385... more>>

Second List Will be putting completed/hiatus or lower readership here: https://www.novelupdates.com/viewlist/77428/ <<less

https://yomou.syosetu.com/rank/list/type/total_total/

If you don't like romance and harem novels, then this list might help you find good novels.  This list of Japanese novels is generally of the SOL, fantasy, and adventure genres with the theme of family and friendship.  ... more>>

For example, the adventures of a father and his daughter in a fantasy world.  Or it could be SOL's story that warms the heart.  

Apart from avoiding the harem and romance genres, I also try to avoid red genres as much as possible (genres are forbidden or should not be read by children or under 15 years old) such as adult, mature, ecchi, and gore. But it could be that in the story there is some content as subplots even though it is not the focus of the story. I mean, I'm also disturbed or uncomfortable with the existence of the red genres or similar contents, even though sometimes the contents are a little needed for plot story development.

The following are recommendations for Japanese novels without romance and harem but focusing on stories of family and friendship in a fantasy world. I hope that you all enjoy reading these novels! <<less

Got tired of seeing novels that I want to put in my other list (16020, the No Love Interest list) having Romantic Subplot, so I made this one on a whim :P
I might move novels between the two lists depending on how they turn out. This list is mostly retired and I probably won't update it.... more>>

Here I am with novels that: 
- Might have romance, and are ongoing
- I haven't finished/started reading
- Have the romantic subplot tag, but there really isn't much romance going on from what I know
- Have romantic subplots that I don't think cuts into the main plot much/doesn’t alter the MC’s character much

Ah, and by romance, I mean the MC's romantic involvement. Side couples don't really count in this case.

I'm postponing adding descriptions for most, but I've written some. Some were also moved from the other list and have descriptions from that. It's also in no particular order, although the ones I haven't read (nor read adaptations of) go at the back. <<less

Novels where the MC is reincarnated/ transmigrated/possessed/transported into a Dating Sim/Novel/Game world as a character or something similar to that.... more>>

I said that, but some of the MCs can actually be the original inhabitant of that world (not reincarnated/transmigrated/possessed).

Tell me if i put the wrong novels in this list, since i don't remember all of the details of these novels/ i haven't read some of them. You can also suggest other novels that might fit this list too.

Sorry for the bad English.
This is a non-harem and non-BL list, since i'm not really interested in those genres. <<less

Just read it.

The isekai here is pointed to another world, but not only to the usual Jpn isekai with reincarnation/rebirth/transmigrate MC. It can be the world that's totally not in the earth, and maybe it's not a reincarnation/transmigration and MC is from that world. ... more>>

My ideal isekai novel is the one with the world building as its central theme and the romance is non existent, even if there's romance element in it, usually it's slow and just as unnecessary side dish.

NO HAREM for me. Tho few of them has harem and romance tags, for me there are those that are not romance and harem, so I'll explain in related description instead. 

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Continuation of the original "Definitive Isekai List": https://www.novelupdates.com/viewlist/8199/?ft=yes 
Still taking that damned break... though I've been reading more now. Isekai that are good are very rare... more>> to find, and I've really gotten tired of the same skyrim over and over again. If you found anything you like from this list, then it's served its job. <<less

No description.

MC is Isekai'd (Reincarnated or Transported) in a Game World or a world with Game-like system, levels, skills, people and places.
(Almost all have Manga... more>> / Manhwa adaptation.These are my recommendations that I have read, currently reading or on-hold novels.) <<less

No description.