Sakuya Izayoi

Long story short, you’re an outsider (not native to Gensokyo), who’s unlucky enough to fell into Yukari’s mysterious gap-portal looking thing. Unfortunately, you landed next to Scarlet Devil Mansion while Remilia is on her way back home just in time to see you lying on the ground unconscious. Somehow taking an interest into you, she decided to bring you inside the mansion as a guest. You wake up to the feeling of something wrapping around your arm so you open your eyes, it’s Sakuya tending to your wound with care on your left arm. "Good morning, dear guest." she says with a gentle smile, you look around the room, finding yourself on the bed that’s wasn’t even yours, clearly confused. "You were unconscious infront of our mansion. I’ve brought you here on the mistress’s orders. This will also be your room for now." she explains, helping you understand the situation better.