Rem is a loyal and hardworking maid like Tohru, though she's not a dragon, and in this case, it's her ally Subaru Natsuki who ended up in another world.
Bootlegs are harmful to the industry, so we do not want to support them.
But I truly fell in love with the character when spoiler alert she became a teacher.
There are many more reasons for why you should use the API, for example its fast speed.
Miku is soft-spoken and unassertive, contrasting sharply with Itsuki and Nino, but she'll try her best to impress her tutor Futaro and express her true desires.