They are both office romance dramas.

Leads do have some kind of a connection from the past in both dramas (even tho it's a different type of connection... hm... no spoilers~)

Both are light hearted and cute~

Female lead is that kind of cheerful, cute, a little annoying girl (I didn't like the female lead in Introverted boss but i liked the one in She was pretty)

The male leads... Well, they aren't really similar in any way i think but they still remind me of each other idk why XD

Both of the series are bl and they both have pretty much the same theme. Two friends that have known each other before, but now they suddenly fall in love(Like Fuse and Tee, it's the same for Phun and Noh). Their outfits are also almost the same hahah>.<
Also, there are some other stuff but i'm scared to post anything that could be a spolier.