been there done that

• Souls time travel
• Love story across times and universes
• Past lives
• Sacrifice for love
• Murder mystery element
• Both have light comedy

In both kdramas:
• office romance
• chaebol ML / regular FL
• boss & employee dynamics
• ML falls first
• serious ML and bubbly FL
• hardworking & strong-headed FL
• ML family initially disapproves
• gold comedy