Similarities:
- The leads are childhood friends
- The FL in SIL used to bully ML and the ML in LIS used to bully FL in their childhood.
- Their chemistry is awesome. (It is the main thing that kept me going)
- Separated due to a misunderstanding.( In childhood)
- Love×Hate relationship.
Difference:
- SIL is a collage romcom, LIS is an Office romance

If you like childhood friends romance, then you may give it a try..