In the blink of an eye, two days have passed since then.
The following two days after that, ray spent his day in Greta's house. He had told his parents that there was a school project that needed him to stay at his friend's house, and he also told his harem to back him up on that argument.
Of course, during these days, so many things had happened. Greta was getting more aggressive as each day passed, and even on the last day Ray stayed over, they slept without any trace of fabric on their body.
Well, they still haven't done that last part yet, but Ray knew, if he were to stay with Greta for a few more days, Greta would eventually reach that point too.