@Kaizeel I mean, all the way in chapter one Tsukasa saved Nasa's life by physically throwing herself in front of a truck and walked away with barely a scratch, alongside many slightly subtler clues in various chapters that she has been alive for a very long time.
Rental girlfriend's author: drags out the plot.
Readers: 175 chapters and nothing still happened. Give me the plot!
Tonikaku Kawaii's author: adds some plot.
Readers: wha-a-at?! Get the plot away from my fluff manga!