This manga can be summed up by two words.
Iyashikei
[ul]A term used for animes and mangas created with the specific purpose of having a healing or soothing effect. Works of this kind often involve realities with little to no conflict, emphasizing nature, the mundane, and the little delights in life. The goal is a means of getting away from daily worries, let the audience embrace a calming state of mind by using familiarity, simplicity, and appeal to positive emotions. As these works tend to involve normal people in normal situations, the Iyashikei genre often overlaps with the Slice of Life genre. Iyashikei often involves the subtler kind of heartwarming moments and sometimes has romance overtones. For this manga, it has romance. [/ul]Seinen
[ul]Seinen animes and mangas tend to be much more sophisticated and mature than their other counterpart genres. More attention is paid to the narrative and the interaction between characters than to action which is the main attraction for most viewers/readers, and the characters are more fleshed out. Realism is the calling card for the seinen genre, commonly earning it the acclaim for their depth and maturity. [/ul]
There is no fanservice or anything vulgar in this manga.
And no, this manga is not like Kimi no Suizou wo Tabetai (I want to eat your pancreas) or Shigatsu wa Kimi no Uso (Your Lie in April). Some comments in the chapters brought this up, and these are false.