 If you liked
Meika-san wa Oshikorosenai
|
 ...then you might like
Dual na Kanojo no Taoshikata
|
Both feature a pretty restrained cast number, focusing almost exclusively on the main relationship. No harem shenanigans, no excessive fanservice, and most importantly, relatively well-paced progression in said main relationship.
They also share that the main heroine has two personalities in a sense. Meika has to pretend to be her "professional" self, which she really just got into to get closer to the MC. The same can be said for Fukamori, the main heroine of Dual na Kanojo, although in a bit more literal sense.