This drama is absolutely wonderful. I don't know why it's not well known, it's on par with the very best k-dramas. There is so much realism and bigger and smaller problems, but all of it portrayed through a very comforting and optimistic lens. (Some issues: crippling social anxiety, gender dysphoria, sexual abuse, a achool bullying past).

This scriptwriter is one true humanist. I also loved her previous dramas, Age of Youth, and Diary of A Prosecutor.

All of the main characters are basically flawed but viewed in such sympathetic and empathetic manner, you just grow to love and understand all of them. This is essentially an ensemble and found family drama. The hair salon employees are all equally main characters but there's also a colourful cast of regular customers, each becoming unique, fleshed out characters.

The romances (both the young and the mature) are incredibly sweet. We also get a philosophicizing narrator who is both wise and understanding of bigger and smaller challenges in life so that it makes you feel you yourself are being heard and understood. All of the actors are great, but especially Park Jung Woo deserves to get more main roles. Highly recommended.