Both series feature a similarly sweet and bubbly FL who is steadfast with who she loves, even as other root-for-able male leads show an interest in her. They both also feature a prominent subplot around finding your voice and celebrity life. They also both have similar scenes between the female lead and the non-romantic leads.
Both series feature a healthy and adorable relationship between a scientist ML and a creative-oriented FL. Both series also feature a stint of a long distance relationship. Both couples also have run-ins with a few two-faced jealous characters, but these characters ultimately don't stay long nor do they have their intended way with the mains' feelings for each other.