The Beauty and the Brain

Ace Killer is reborn as the most unloved Ms. Spence of the Spence family.
Ms. Spence is fat as a pig? Never mind, it's not too late to lose weight!
Ms. Spence is weak? Never mind, it's not too late to be strong!
Ms. Spence is a coward? Never mind, now she turns into an powerful queen!
Having dealt with the scum, Ms. Spence is ready to live her life in style, but Mr. Whitney came up and asked, "When are we getting married?"