I Was Summoned by the Demon Lord, but I Can't Understand Her Language

Story:

Once I woke up in the morning … I found myself in a strange world with a strange girl! This is definitely a call to another world! This is the beginning of my exciting life as an adventurer … I thought so, but … "I couldn't say a word!" Summoner – cute Demon Lord (maybe) !? We use gestures because we do not understand each other …