Sumi Senpai wa Pakorarete mo Hyoujou o Kaenai | Sumi-Senpai's Expression Doesn't Change Even As She's Getting Pounded
(C78) Oneesama, Kore ga Level 4 Teleporter Shirai Kuroko no Sokojikara desuno!- Onee-sama, This is the Level 4 Teleporter Shirai Kuroko's Real Strength! (Toaru Kagaku no Railgun)