Aiden laughed a bit. "I was just coming to check on my sister and see if her roommate was here." He answered her question calmly. "What? Can't worry and wanna help you out from time to time?" He then asked calmly before catching the scent of someone knew. He turned his head a bit and noticed a new person. "Oh... Hey." He greeted Mizuchi with a small smile. "Are we in your way?" He asked wondering if this girl was Eira's new roommate. She was younger than him and his sister. Looks like Eira was getting a "little sister" of sorts.