Author's WN notes say story is not BL; although there is strong friendship and fraternity between male characters there is no actual love (aka. bromance that can be seen that way).
https://ncode.syosetu.com/n5128by/
Please.... please let it be a normal comradeship manga please please please....... it's been since ookiku furikabute that i read a manga about comradeship beetween men.....
Aah... To leave for another place where none knows your name and what you are... To just relax without the need to think about job...
Wait, isn't it a paid vacation? 'cuz it sounds like an ideal one to me.