purchase this work here: https://www.dlsite.com/maniax/work/=/product_id/RJ045330.html
1st character is Hakufu Sonsaku from Ikkitousen 2nd character is Shimei Ryomou from Ikkitousen 3rd character is Kyoko Himeji from Joshikousei Girl's High 4th character is さつき from ??? 5th character is Ryoko Mitsurugi from Real Bout High School 6th character is 初音 from ???