TANTEI OPERA MILKY HOLMES 2 Opening Theme -Nazo! Nazo? Happiness!!

New opening theme of "Milky Holmes"anime series! Release Date: 2012.1.25

1. NAZO!NAZO?HAPPINESS!!
2. HYPER MILKY HOUR
3. NAZO!NAZO?HAPPINESS!! (Off Vocal)
4. HYPER MILKY HOUR (Off Vocal)