The Sket-dan is challenged to a battle of wits by Enigman, the masked President of the Quiz Club (and his lovely assistant Quettion). Later, a drop-dead gorgeous second year comes to the Sket-dan to ask for advice... about love? Can the Sket-dan unravel the enigma of love?
That's right! It's hard and you can't eat it!
¡Es cierto! ¡Es duro y no te lo puedes comer!
¡Es cierto! ¡Es dura y no te la puedes comer!
É mesmo! Não dá para 
comer quem é pão duro!