I haven't finished the series so i don't know if things improve drastically in the later half of the series but up until i saw, the characters seem to live in their own bubble world, while stuff around them is falling apart. This is expected in a romance based light-hearted series, but the topics this show covers(abandonment, effects of crime, anti-social behavior), i expected an intense romance with at least a bit of realism. The characters just seemed unreasonable to me and weren't quiet in the moment. P.S: i absolutely fan-girl over booth Seo In Guk and Jung So Min, and hence found their acting phenomenal.