eternal well (i.e. one that never runs dry)
person who is ignorant of the real world; (lit.) frog in a well
dam; weir; barrier; sluice
pool for soaking seed rice before planting
(arch.) sky; cloud; distant place; high place; imperial court
Sakurai Women's Junior College
Matsui Securities (Japanese online securities firm)
Ishii Tool & Engineering Corporation
Matsui Tengudo (karuta maker)