Reincarnated Wehraboo's Revenge

Erika Raubenbraum woke up from her sleep but she was very conflicted. She didn't know what was happening or where she was. She could see a bright chandelier above her head and the large and comfortable bed she was in. She was wearing a silky soft nightgown, the mattress of the bed was so soft that she was half buried in it. The blanket she was covered in was also very high quality with various embroidery. But something was not right she felt everything was so unfamiliar to her. Her head hurt and she covered her head with her hand. But, "Wait these hands are so small. Whose hands are they?... They are ...mine? I don't... get it." Suddenly her head flocked with memories. She is the daughter of Duke Walther Raubenbraum, Erika Raubenbraum a very beautiful and elegent 10 year old girl. "Wait...." suddenly another memory flocked in her head. "Something's not right. I am a high school girl... I was returning home from a cosplay convention. But then why am I here? and why do I think I know this place.... What's happening?" "Isn't my name Fubuki Tamada. That's right I was returning home from the cosplay convention, where I was cosplaying as a Wehrmacht soldier. But then... ah I got hit by a truck? So then I died? Then why am I still alive?" Am I reincarnated? It seems like I have become someone with huge wealth." While she was thinking all this one of maid called to her because she looked to be in pain. "Lady Erika are you alright?"