Milk bread like a square

It was my 3rd time making it, but this time the amount of dough inside was perfect so even the crumb (not only the exterior) was perfect.

You can see here my previous attempts

https://www.reddit.com/r/Breadit/comments/1j2twxu/milk_bread_first_time_with_closed_lid_another_one/

https://www.reddit.com/r/JapaneseFood/comments/1j5xmgi/this_time_is_a_perfect_rectangle_milk_bread_the/