@moegamisama id be inclined to actually care for natchan if her character was actually deeper than "my boobs are big and i like mc" cuz she stands out in the love triangle as not being to deep compared to mc and fmc.(also im slightly biased cuz for some reason to me an emotionless character like fmc that occasionally shows emotion seems cuter than a girl who flaunts her boobs rather than trying to connect to mc, so this might be more down to preference than the character actually being really shallow idk)