What is the anime where guy meets a succubus with fear of men?

You're likely thinking of "How Not to Summon a Demon Lord" (also known as "Isekai Maou to Shoukan Shoujo").

In this anime, the protagonist, Takuma Sakamoto, is a skilled online gamer who gets transported into the game world he played. He ends up summoning two demon girls, one of whom is Rem, a succubus with a fear of men.

Let me know if you have any other anime questions!