Luster Grill will open at The Realm at Castle Hills in Lewisville. Luster Grill is a new restaurant serving teriyaki-inspired dishes and sushi, according to a Realm news release. Luster Grill is part of the 11 new units at The Realm, which will occupy nearly 35,000 square feet and open between the spring and summer. The Realm at Castle Hills is located at 4400 SH 121, Lewisville.