Transfer copyright to the Client(The Artist will NOT exercise her/his moral rights)

nice to meet you. My name is Yoshida from B & B Co., Ltd. We retail and manufacture character apparel goods. We have decided to make a T-shirt with the theme of marine mammals and sharks, and we would like to hear from you after seeing the illustration by Yu Chigasaki. As for the illustrations, I would like to have one shark and two marine mammals (sharks and penguins), one for each (three designs in total). * Since there is no clear composition request, is it possible to make a proposal? Is it possible to request the design of the entire T-shirt? * We also want to purchase the copyright. Although it is easy, we will attach a document that summarizes the essential points, so please check it first. I look forward to working with you.