1. Himitsu 01 "4-gatsu no Owarigoro" (卑蜜(ひみつ)01『4月の終わり頃』) 2. Himitsu 02 "Zoku 4-gatsu no Owarigoro" (卑蜜(ひみつ)02『続・4月の終わり頃』) 3. Himitsu 03 "Kuchidomeryou" (卑蜜(ひみつ)03『口止め料』) 4. Himitsu 04 "Yakusoku" (卑蜜(ひみつ)04『やくそく』) 5. Himitsu 05 "Gomen ne" (卑蜜(ひみつ)05『ごめんね』) 6. Himitsu 06 "Ima Koko de" (卑蜜(ひみつ)06『いまここで』)