source: http://www.pixiv.net/member_illust.php?mode=medium&illust_id=40315393 Marisa was corrupted by tentacles in previous1 and 2, then fuck Reimu that she wants help Marisa.
@morineko: Forgot http://www.pixiv.net/member_illust.php?mode=medium&illust_id=42250988, the sequel pic.
This guy's really good. Not into the breaking, but the expressions and progression are great. Really like how tired they both look at the end; even if they're brainwashed into crazed breeding machines, they've still got normal human stamina and needs.