Right? Not everything involving yuri has to be ALL yuri. This is something different and that's fine.
It's funny because this has more Yuri development then some others Shoujo Ai that end up with just subtext
Yuri = girl + girl. Where the fuck does the guy come in retard. This isnt yuri, this is harem bullshit
The manga don't sell it self as yuri, neither the OP tagged as a yuri, people added the tag in this, also, it's not a harem, harem would be 2+ people dating a single person, this is a polygamous relation, they all date, girl x girl and girls x guy
Why are you guys complaining about the love triangle in a manga called "This Triangle RomCom has A duty to be happy"?