I am not found it on mugimugi doujinshi, but honestly I am not a good searcher. After 10 minutes I abandoned.I found already on this website but only 37 pages and title incomplete.

I have 31 others doujinshis ah my goddess to upload.

"Sengoku Rock - Nan Demo-R". Noticed, that it's more than one artist...will list the rest later, sry.

Edit: Names and spellings from mugimugi:

Cover Miwa Tamao
03~ Inui Tatsumi
27 Masahiro
31~ Maimai
49~ Komedonya Z
51~ Mutsu Nagare
60~ ego
63~ Umedama Nabu
90~ (?) Sakamoto Sarutomunto Nerima (listed as such on mugimugi)
95~ Kogawa Masayoshi
120~ sakuragi (?) Yui
123~ Komedonya Z
131~ Masahiro
133~ Masa Nyau
Back Umedama Nabu

edit: @AriesWarlock: Ah, good find. Totally forgot looking up the circle at the backcover.

Base +11, annacanna +6, NE1 +16, ceroxon +11, WLyon +28, Maximum_Joe +30, grumpymal +29, danixxx +30, ragknights +7, pervido +16, Fffffff123 -7, Lin Setsu A +22

This looks like a complete version of

[Tsurikichi-Doumei] Nandemo-R Sengoku Roku

https://e-hentai.org/g/161294/23c03a3bef/

Base +9, WLyon +28, grumpymal +29, danixxx +30, pervido +16, ceroxon +8

W-whow... thanks for the upload!
The Samurai Spirits part I found one page of long ago... and I always wanted to see it in full!
Thanks again!!!

Base +16, WLyon +28, grumpymal +29, danixxx +30, Kitsune Nishidate +10, ceroxon +8

http://doujinshi.mugimugi.org/book/412373/Sengoku-Rock-Nan-Demo-R/

The easiest way to search the doujinshi database when you want to know the name of something is probably using the "image search": http://doujinshi.mugimugi.org/search/image/

You provide the cover and it looks to a simily entry in the database.

Base +10, Maximum_Joe +30, grumpymal +29, danixxx +30, pervido +16, ceroxon +8

A [Tsurikichi-Doumei] scan? Nice. Good job IDing stuff, guys.

Base +38, grumpymal +29, danixxx +30

This doujin can't include ben-to or medaka box parodies since it was released before their start.

Base +7