In both dramas lead female character is quite unsexual (at the beggining) and is trying to find her womanhood with a help from a guy.
In 'Personal...' the lady is clumsy, soft and cute while in 'Witch...' the lady is cold, dark and arrogant.
Same storyline. A strong headed work addict gets a nice man to be their helper. The man already has a girlfriend and ex's make the situation more difficult. Eventually they fall in love.
In both dramas the main character needs to be transformed in a "proper lady". The plot of Yamato Nadeshiko Shichi Henge is much more developed and it's a better watch in my opinion.
Similar plot. Both women are so immersed in their work that love doesn't play a great role in their lives until they meet a man that will change their perception.