My guess is this is the end of the series, from the looks of things.

best end

May not be, doesn't say anything about an end. Although how that tree went into bloom is anyone's guess...
Also, I'd like a check on the title and Daiyousei's line: I'm not sure how I could translate わっしょい other than a "Yay!", and I'm not sure I understood the 落ち着こうよ　on Daiyousei's line right...

ThunderBird said:
May not be, doesn't say anything about an end. Although how that tree went into bloom is anyone's guess......

Yuuka came by?

m3mn4rch said:
Yuuka came by?

That would be the logical answer.