Any bl like Little Mushroom?

Good sci-fi bl is very rare. Is there anything specific you like about Little Mushroom? Might help us find you something similar.

If it's a good bl sci-fi you want then I'd recommend reading "The invasion day" but it's a novel...if you're ok with it.

I guess the plot (in a way) & art style

That is fine thank you very much

LM has a pretty unique plot. Maybe you'd like No.6? It's a post-apoc(?) world where an escaped experimental subject meets a boy named Shion. The anime is also good if you'd prefer to watch that instead.

https://www.mangago.zone/read-manga/no_6/

Another manhwa with gorgeous artstyle (not sci-fi):

https://www.mangago.zone/read-manga/heaven_official_s_blessing/

Some sci-fi bl that I like:

https://www.mangago.zone/read-manga/host_in_down/
https://www.mangago.zone/read-manga/500_nen_no_itonami/
https://www.mangago.zone/read-manga/nobody_knows/

Some apocalyptic bl that I like:

https://www.mangago.zone/read-manga/uruwashiki_shuen/
https://www.mangago.zone/read-manga/undead_tsuyuhisa_fumi/
https://www.mangago.zone/read-manga/zon_bl/

Thank you ! I added 2 of them to my list rn : D