Gal to Pants to 2-oku En: Yuukai, Nametemashita

A 2 million dollar ransom—replaced by a pile of some ditz's underwear! When a case of mistaken identity results in her kidnapping, the would-be target is tasked with handing over her own ransom... But one thing leads to another and then everything turns topsy-turvyin this bizarre kidnapping story!

(Source: Coolmic)

Note: Simultaneously released in long-strip and traditional formats, with 18 episodes and 6 chapters respectively.