Inio Asano's Solanin struck such a chord with me. I had picked up the manga initially but forgot about it after a few days only to jump right back into it once I continued it. The best part about this manga is the fact that you feel it could be real - the characters, the settings, the situations, basically everything.
Other than that, the manga is easy on the eyes as all the drawings are crisp, clear and neat. It's a fast read too as the chapters are relatively short. Every once in a while, there is something that a character says, be it main or side, that will hit home and even after completing the manga for a couple of days now, the manga's characters, plot and lives still linger in my head - to me, that is a given fact that a series is good if it makes a reader think about it even after it's completed.
I would definitely give Solanin a re-read and I suggest whoever's reading this manga to give it a shot. If you like anything slice of life, you'd definitely enjoy Solanin.