The Best Twins (2019)

Both series feel very similar in terms of humor and tone. The writing and plot lines are very simple and fluffy, nothing to be taken too seriously. The characters and the situations in which they find themselves are silly and over the top. Both also feature meddling caretakers and BL couples (though the BL is a more prominent feature in The Best Twins than in My Bromance).

Both contain zany, light-hearted, humorous storylines that poke fun at the BL/shipping genre. WRU balances this with a more serious and traditional plot line, whereas TBT pretty much focuses entirely on humor and comedy.

The dramas don't have many identical plot points, but both are :

BL romance dramas that involve a pair of identical twins in which one of them is straight and the other one is either gay or bi-sexial.
They involve their love wife.. the problems they have in their school and work-enviroment (as it involve students of high-school and colleague students.. and their close by age just started working adults)...
In both the twins have a family that doesn't support their love or life decisions.