Team KZ begins their investigation into Sunahara's involvement with a gang of delinquents. In an attempt to get information out of him, Aya attempts to give him Valentine's Day chocolates.
Tantei Team KZ Jiken Note!
!مذكّرات فريق التحرِّي ك.زد
Tantei Team KZ Jiken Note!
Le cahier d’incidents
des détectives KZ.
Il diario della squadra di detective KZ.
A Equipe de Detetives KZ: 
o arquivo de casos.