Takenaka light green bento lunch box food storage 7 inches

A fairly large bento box by Takenaka (presumed Japanese). Measures 7x4.25x2.5". I'm not sure if this originally had smaller compartments inside but this is just the large box. Sage green outside with white inside--white shows some wear and scratches. I don't see any other issues. Smoke- and pet-free home.