Arie Matsushima

An office lady who works for the same company as Ryou but her department is different. She is called "Arrietty" by her friends. She's a fan of Foreward World's (フォアワード・ワールド) character, Touhou, and she keeps it a secret at the company, but she's surprisingly aware that Ryou knows and thought he would ridicule her which he didn't. She's in love with Ryou.