City's infamous gentleman of the night, Mystic Thief X!
And the detective who was stolen her first kiss!
Among the 3 suspects, who is the Mystic Thief who stole her first kiss?

I like you lots and lots!!
Sickly romanticist boy, 「Jeremy」

Are you the one, my Contractor. of. Darkness.?
A Twelvie eye patched guy, 「Sean」

Not an Otaku,
A perfect(?) Student President 「Walter」

And
My dear detective,
「Mystic Thief X」, who sends forenotice only to me!!

Miss Detective,
can you catch the Mystic Thief X,
unlike the words by nagging assistant 「Martin」?

The culprit, Mystic Thief X, is among us!!
Miss Detective's Undercover!