I loved Yasushi as well! I don't think Natsumi was all that impatient, though. From Takumi's point of view, he may have been going a little fast, but if you look at it from Natsumi's point of view, it was years of frustration and longing built up. He never forced Takumi to do anything, and he asked permission from Takumi first. It would have been very different if Natsumi could be aroused by anything else, but he even said that the only thing that got a reaction from him was Takumi. On top of that, the way Takumi decided to date him made it come across like Takumi wasn't very serious. That caused a lot of anxiety for Natsumi. I can understand why he was a little heavy handed in his pursuit of Takumi because of that. All in all though, he never seriously pushed him too far, and he always took Takumi's feelings and wants into consideration.
Good points!
Nicely said
The other friend was the best for sure!..... I didn't particularly like how impatient Natsuki was but overall it was good.