I was immersed in this since it got me to reflect on my own life but by the end of it I still felt something was missing. Perhaps it may have been because this was a splice-of-life drama so there was less story to develop.

However, I was pleasantly surprised to see all the themes this drama was able to touch upon. These were some I noticed even if they weren't explicitly mentioned:
1. sexuality
2. family and socio-economic status
3. self-love/care and mental health
4. boundaries and personal space
5. masculinity and emotions
6. strong and independent females
7. disability (visible or invisible)
8. dreams and goals
9. environmentalism
10. friendship
11. justice
12. ageism and seniority

Just seeing all these themes in one drama today made me happy and I'm sure there were some I missed. It seems that shows/entertainment are moving towards a more positive direction where these topics (some more sensitive than others) can become more open for discussion. If you're curious about how these themes were incorporated, I would recommend trying this drama out. Perhaps you can notice more than I did.