Wana: Hakudaku Mamire no Houkago

輪罠（わな）～白濁まみれの放課後～

Based on the erotic game by Guilty. Raika's brother died suddenly. She changed to her brother's school (all-boy school), so she could to find why he committed suicide. Someone interferes with her and discovers her identity leading closer to the truth behind her brother's death.