[Machine Translation] By day, he is a dull window-side section chief. But is he really the invincible "Special Mission Chief"? The latest hit drama series, the fourth installment, is now on sale on DVD! This 5-disc DVD box set includes the "Season 4 Entry Special" (2-hour special) aired on 1/3, and all 8 episodes (episodes 32-39) of "Season 4" aired from 1/8 to 3/12.