記憶を失くした代わりに攻略対象の婚約者だったことを思い出しました (Associated Names)

Alexia, the daughter of a count wakes up one day and finds she has lost her memory. She can’t remember her family, but she has a faint memory of someone else other than Alexia. She is cherished by her overprotective younger brother and her fiancé, with whom she was not on good terms. When she…