Kumamoto Castle, which was seriously damaged in last month's earthquake, is one of Japan's most beloved and iconic landmarks. Originally built in the 15th century, the structure is one of the largest fortifications in Japan and covers a big piece of land. It is famous for its stone foundation — the product of its original owners' deep paranoia about being attacked.

NHK has quickly put together a special installment for its documentary series "Rekishi Hiwa Historia" ("Historical Unknowns: Historia"; NHK-G, Fri., 8 p.m.), about the castle, which has been destroyed and damaged many times before, but usually at the hands of men, not nature. The program explores the structure's elaborate defensive features and the line of families who have controlled it, including that of former Prime Minister Morihiro Hosokawa.

Narumi Yasuda used to be one of the most in-demand actress for drama series until she got married, and then she became one of the most in-demand CM actresses, usually playing housewives and mothers. The eight-part "Asa ga Kuru" ("Morning Comes"; Fuji TV, June 4, 11:40 p.m.), marks her first drama-series appearance in 16 years.