EP1 - Mysterious Girlfriend EP2 - A Mysterious Bond EP3 - The Mysterious Test Tube EP4 - Mysterious Girl Meets Girl EP5 - A Mysterious First Date EP6 - Mysterious Step Up EP7 - Mysterious Flu EP8 - Mysterious Sensation EP9 - Mysterious "Somewhat, A Little" EP10 - Mysterious Adventure EP11 - Mysterious Cultural Festival EP12 - Mysterious "Squeeze" EP13 - Mysterious Girlfriend and Boyfriend