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!