I really really love & appreciate the polyamory which, thankfully, ended up seeming pretty healthy
(which i was super not expecting considering how basically the entire arc save the last few pages went)
But, like everyone else has said, canno's admittedly not the BEST writer. Or at least, she doesn't usually do a fantastic job at executing her otherwise good ideas. Either way, I would have preferred more development between ryou and nina, because I def am super interested in their dynamic and and disappointed by the buildup (or lack thereof).
But none of that really matters, because I'll take my cute yuri polyamory any day.