1. Chigiri to Musubi no Houteishiki (Equation of Chigiri & Musubi) 2. Neko to Watashi no Houteishiki (The Equation of the Cat and Me) 3. Kare to Imouto no Houteishiki (The Equation of Him and His Little Sister) 4. Joshu to Maid no Houteishiki (The Equation of the Assistant and the Maid) 5. Ai to Panya to Kataomoi 6. Hakui to Futago no Houteishiki 7. Hakui to Are no Houteishiki 8. Sekijitsu no Kemono