Ima Koko ni, Netorare Shoujo ga Tanjou Suru.

The school boy Happei had no confidence in himself. At this rate, he was bound to become a job-less shut-in after graduation. Worried about him, his childhood friend Mai transfers to his school, and tries to wake him up from his listless daze. However, she does not get the reception she expected, and he remains unchanged. Ever determined, she decides to give his mind a bigger shock by getting taken by another man, right in front of his eyes. Surely, that will straighten him out... And that would be the first of many times she would be stolen away and fucked as he watches.