Wesuta no Daidokoro -Wasureta Boku no Sekai Gohan-

Kasumi, a boarding house caretaker for foreigners is tasked with taking in a boy named Haru, a boy with amnesia who wandered into her yard. However, Haru's origins are a mystery, and no one, including the residents, can find any clues to his memory. So Kasumi makes a proposal, "If we feed him different cuisines from all over the world, we may be able to find a taste of his homeland!" (MTL)