SPSB-37 Heroine Tickling Humiliation Hell: Science Bird Soldier Team Bird Soldier — Bird White & Bird Red

Bird White was once captured by Galsadra, a female officer of the evil organization Garangar, and subjected to harsh questioning. She was rescued by her older sister, Red, but her weakness for tickling was exposed. After learning this, Red began directing her twisted affection toward White under the guise of tickle training. Galsadra believed Red shared the same weakness, so she first used tickling to break Red down, then used Red as bait to trap White, and finally subjected White to relentless tickling along with Red. [BAD END]