Maybe it's a bug, but I only get the bad ending ("Euphoria") when I do that.
Viewing post in There's no such thing as a harem comments
Maybe weeks 2-4 are the wrong places to go.
As indicated in the description column hint, the location for weeks 2-4 also needs to be correct.
There are strategy answers on my website below, and I have prepared an English version.
If you need them, please use them.
(Go "Game" and click "All route answers" in There's no such thing as a harem)
https://anomalyxxx.wixsite.com/anomaly