"Exclusive" products are often removed from storefronts after their promotion ends or due to creator decisions. If the work was adult-oriented, it might have been removed if it violated a platform's updated content policies. It's also possible that the product was migrated to a different site or re-released under a new ID. I should also note that the term "oshioki" is used in many contexts, and associating it with a specific lost media is challenging.
Available digitally on creators' platforms like Lamb Shop on BOOTH . Gameplay Mechanics and Design eng hoshino to oshioki rj01215255 exclusive
