The door was unlocked? Curious! Did someone let Momo in, or was this building unlocked for other reasons? Perhaps Momo had been here before and had unfinished business, a thought that brought a smirk to Erika's lips as she quickly followed, opening the door and stepping inside right after when she was sure Momo had already entered the building.

It would be harder to hide her steps, but Erika didn't want to lose sight of her quarry just yet, so the detective took the risk of being heard as she stepped carefully around, trying to avoid any particularly creaky spots.

Just what sort of mysteries were present here? So interesting!