Koushaku Ke Ni Umarete Shonichi Ni Atotsugi Shikkaku No Rakuin Wo Osaremashitaga Kyou Mo Genki Ni Ikitemasu

Although Etois was born with limited magical ability, she has been reincarnated into a duke's family in another realm. She has been marked with the words "Disqualified" on her forehead as a result!
Five kids from a branch family are together one day. The best one will inherit the duke's family, and they will be Etois' bodyguards until she is fifteen. However, Etois possesses a remarkable talent that the gods bestowed upon her but which she had forgotten about.