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If you're just following your mothers footsteps, I don't recommend it. Your distorted devotion will lead you to your destruction, Itsuki-chan. It's almost like a curse
|― Mudou warning Itsuki Nakano|
Mudou appears to be an old man; lacking hair on his head and his grown out, white-coloured beard being his most apparent feature.
As the newfound father of the quintuplets, much of his identity has yet to be revealed, but he seems to have ever regretted his decision of leaving his daughters too many hardships. Stating that he wants to "atone" for his sins.
He holds some animosity towards Maruo Nakano because of allowing his daughters to follow the same misguided path as did his late wife.