
There's one shot version of this manga, in that ver. it's clear that the black-haired boy has a crush on the other boy. They even kissed with tongue lol.
In this manga, it's more focused on how they survived (I think); the mystery too. I'm sure he still likes the other boy here. He is so desperate ngl. They are trying to help each other. Idk where the author gonna take their love story that's one thing to look forward to!
So it's okay to read but don't expect something like flirting or sex lol. It's like a horror survival type of shounen ai which is good. It's for ppl who love shounen but want a lil BL spice on the main dish, like me! It's pretty popular too

even though there’s not much romance between them i still would recommend reading this because it’s really interesting. There hasn’t been much romance yet but they obviously both like each other romantically. I’d doubt there will be any sexual things though and who knows where the author is going to go with their relationship. This is more of a horror/thriller then anything

It's on this page actually, here's the link https://www.mangago.zone/read-manga/hikaru_ga_shinda_natsu/uu/br_chapter-83358/pg-1/
I've read this story but only chapter 5 (more or less). I misunderstood at that time, I thought this was YAOI... just now when there was an update notification I checked again the genre and it turned out to be shounen ai (˘・_・˘).
I plan to read it again because I see that many chapters have been added.
So i want to ask.., is shounen ai here in the sense that there is a 'love relationship between them' or is it just 'friends who like'? (˘・_・˘)
*Give me a lil spoiler bout their relationship*