First set in high school with old school technology. Although On Your Wedding Day is not set as far back as Reply 1988.
Also first love, more than first loves, realistic moments of choices and decisions we make on our journey of life.

Both are hilarious and both have characters who are over the top spirits and humans who have supernatural powers.

Both contain:
- Prosecutors & police
- Corruption
- Intrigue
- Suspense & thrill
- Serial killers
- No romance

Both contain:
- Criminal profiling
- Serial murders
- Psychopathic tendencies
- Dark forgotten pasts