Sushi restaurant. Koi Sushi is a new restaurant located in Orillia, Ontario which specializes in Japanese, Chinese & Thai cuisine. They also offer Teriyaki, Tempura & Wok & a "freshly made" All You Can Eat Buffet. They are licensed by the L.L.B.O. and provide dining-in, take-out & delivery. Open 7 days A Week "Koi Sushi" is quickly gaining a reputation for "excellent food" at very affordable prices!