'E' in e-shuushuu means picture (絵) while 'shuushuu' means collection (収集), hence, e-shuushuu is a collection of pictures.

Image Tag here

"here"

Title:: here
Description:: ヘレ / https://www.pixiv.net/en/users/5061948 | Twitter ID: @hr_rz_ggg
Type:: Artist Tag
Added:: May 16th, 2016 by Hakuryu
More images:: 48 "here" images
Shuu Wiki:: here; Create Artist Wiki Page