The dramas give off a similar vibe especially because the couples have a similar type of relationship. The female leads also have similar personalities (the one from wok of love is more extroverted tho and the one from my secret romance is a bit more shy and def more naive). I am not that great at analysing but the male leads also have a few similarities: they both get annoyed easily, lowkey have anger issues and are both (at some point) gentlemen for their FL.