Wa Shin is tucked away in a chic residential tower in the Back Bay enclave of Bay Village. The space has a contemporary, polished look centered around an L-shaped hinoki counter, with dark stone tile flooring contrasting against light wood and softly calibrated lighting. Chef Sky Zheng presents an omakase focused on high-quality fish, much of it sourced from Japan, prepared in an edomae-inspired style. The menu begins with a few seasonal zensai before moving into a progression of nigiri, where preparations are generally simple, occasionally incorporating light torching, citrus or subtle garnishes. The offering emphasizes seasonal ingredients and a straightforward approach to sushi, with a menu that evolves throughout the year.