I did find this arc less interesting than previous ones. It was a bit too long for my taste. I do think this chapter was one of the better ones of this arc.
Why doesn't he want to show off? If he likes to drive his Countach so much, he should have offered to drive his boss. Now, he missed a perfect opportunity to seal the deal fast.
After reading some works, this one included, were the harem is properly made, started thinking more positively about it. The issue is that most anime/manga that we get exposed have a bad harem realization. Where the girls start throwing them selfs at the MC for the smallest thing. From which...
I think the Dryad was the Queens power, not her soul. It's a device that holds the her people's souls, i think. She wanted to destroy it to let her people rest, as she thinks it was a mistake.
Or is it? The moment he got a car he suddenly got riz. It has only been increasing each chapter. So maybe If you get a car will be popular with the ladies. :D