ANSWER: Kansen 5: The Daybreak / 姦染5-THE Daybreak-

ANSWER: Kagachi-sama Onagusame Tatematsurimasu: Netorare Mura Inya Hanashi - The Animation / かがち様お慰め奉ります ~寝取られ村淫夜噺~ THE ...

ANSWER: Akiba Kei Kanojo / Akiba Girls / アキバ系彼女

ANSWER: Flash H-Game: 動くE.C.M.

ANSWER: Eroge. Green ～Akizora no Screen～ / GREEN～秋空のスクリーン～ Video:

ANSWER: 3D Flash H-Game Batsugun Kanojo by PINKBELL SOFTWARE.

ANSWER: Mizugi Kanojo: The Animation / Mizuho! Ekusasaizu! / 水着彼女～THE ANIMATION～ Gif is from the last episode btw. Enjoy.