Grand Replacement.
Old gallery: /g/740800/4b5fe7aca5/ by leviskiller 2014-09-20 23:19
Changes: cover order
Doujinshi.org: https://www.doujinshi.org/book/1604364/

I suggest if you don't know what bōsōzoku to check it up, it's really interesting. See https://en.wikipedia.org/wiki/B%C5%8Ds%C5%8Dzoku, the article on https://www.japantimes.co.jp/news/2016/12/13/national/social-issues/japans-bosozoku-bikers-a-vanishing-rebel-breed/] and an article on JT again about a documentary called Sayonara Speed Tribes https://www.japantimes.co.jp/news/2013/04/18/national/documentary-chronicles-disappearing-world-of-bosozoku/