Responses
If I were you, and no one could provide the names, either use the tag function on this website and use “historical” or “soldier” etc, or search for who “Shirozaki” is (name is in both of the pictures, graphics by), OR email the Blissful Sin team about it. It seems like the same artist.
What's the name of those mangas?
1: http://www.mangago.zone/read-manga/7_nenme_no_dou_kyonin/an/7-nenme-no-dou-kyonin-chapter-1%20(One%20Shot).html/36/
2: http://www.mangago.zone/read-manga/7_nenme_no_dou_kyonin/an/7-nenme-no-dou-kyonin-chapter-1%20(One%20Shot).html/37/