I'm looking for these comics here, do someone know where I can find them for free? unfortunately I don't have access to DiGiket...

Name: Ma Ken
Publisher: Nakata Shunpei

Ma Ken (remake)
https://www.dlsite.com/bl/work/=/product_id/RJ163110.html

Ma ken ZERO
https://www.doujinshi.org/book/692906/Maken-ZERO/

Ma Ken ZERO 2 (remake)
https://www.doujinshi.org/book/692905/Maken-ZERO-2/

Ma Ken ZERO 3 (remake)
https://www.doujinshi.org/book/697046/Maken-ZERO-3/

I've been looking for them everywhere but I can't find a single bit of them...