Was sitting on this since a buy on the 29th but wanted to let the zero day run out.

02-28: main feature
29-33: side feature "Doing It with Kaori-san"

The series so far:
Rubber Marching: https://e-hentai.org/g/1530370/b36e9c446e/
Rubber Marching 2: https://e-hentai.org/g/2663215/c5409c92e2/
Rubber Marching 3: https://e-hentai.org/g/2663217/c4c93101fd/
Rubber Marching ~Henshin Heroine Sennou Hen~: https://e-hentai.org/g/2465223/b51ca74078/
Rubber Marching ~Ero~: https://e-hentai.org/g/3174476/32f97d579f/
Rubber Marching ~Young Girl's Story~: you are here

Support the original release:
https://tmzf.booth.pm/items/7361075 (shadow gradient censorship)
https://www.dlsite.com/maniax/work/=/product_id/RJ01459730.html (solid bar censorship, JPN IP required because "Petite")
https://www.dmm.co.jp/dc/doujin/-/detail/=/cid=d_657676/ (mosaic censorship, JPN IP required because FANZA)

Would love to see more combatants, catfights, and ryona from this artist. But this would do.

Base +6