A side note: Tatsuya Yoshikawa did work on the character designs of Bof2 and some of the promotional illustrations of bof 1 (designed by Keiji Inafune). This information during the research of this video was different depending on the source used (official art book never mentions or credits Tatsuya Yoshikawa at all). However, after some extra layers (searching in Japanese) his role became clear. In this video I decided to play it safe and mainly mentioned bof3/5.
Not specifically, only that it's Manga styled made by Tatsuya Yoshikawa. He changes a bit with each installment and I think he uses a lot of different traditional media tools. Especially if we compare his bof3 and 5 art.