#102 - Wafusuma

I was writing a Wafusuma for a project I'm contributing to and while doing so got the idea to try this set-up. It's a little gimmicky and I didn't put too much effort into it (this was the first location I tried for the rectangles - I did have to tweak the values though) but I think it turned out cute enough to publish it. There's probably a mean counting puzzle hiding in a different version of this idea as well.

Difficulty - 2.5/5

(rules from Puzzle Rules)
Divide the grid into regions of orthogonally connected cells. Two regions of the same size may not share an edge. Borders must separate two different regions. A number on a border indicates the total number of cells contained in the two regions it separates.

Solve on puzz.link
https://puzz.link/p?wafusuma/10/10/u78g.h.h78m69m7am99p.i.zo.i886m475zs.iab95la976u