Start Up started with a bang and ended with a wimper. Male lead(do san) went from adorable & likable dork to one of the most hated lead of 2020 for majority of viewer. Female Lead(Dalmi) journey to become a competitive CEO is not believable. 2nd Male Lead( Jipyeong) ended up being a punching bag for majority of the story arc. 2nd Female Lead(Injae) is no more than a expensive cameo.
The promised focused business essentric drama is turned to love triangle. Main plot were ignored and not addressed post ep 8 as male lead character is getting hated from majority of the viewer. It got too entense that that they made Ji Pyeong apologise to Dosan for something that is not his fault, he need to be the cupid for main lead couple, potential killer etc.
The redeeming quality of Start Up is Ji Pyeong( 2nd ML), In Jae( 2nd FL), Halmoni, Saha, OST and 1st half of Start Up. I would not recommend this drama as you will feel more angst than happy.