This is a life-changing classic. This manga, as well as its OVAs, feels like therapy. Reading this manga every night before going to sleep had a major effect on my mood and absolutely changed my outlook on day-to-day life. Not everybody may have the same experience with this manga, but I found it as well as the OVAs at a perfect time for it to effect me.
Alpha's relaxing journey through life as well as the relationships she forms with the various characters creates just such a comfy vibe throughout the entire manga. I wish my life could be so simple as to decide whether I want to work some days or not, and not have it drastically affect my life and future.
My only criticism is that the ending is rather abrupt, I think it could have been handled much better, but it feels appropriate in its own way.