Fuji TV is airing a series of two-hour dramas based on the best-selling mysteries of Keigo Higashino. This week, it presents “Brutus no Shinzo” (“The Heart of Brutus”; Fri., 9 p.m.), which belongs to the “perfect murder” subgenre.

Takuya (Tatsuya Fujiwara) is a young executive in the robotics division of a major manufacturer of industrial equipment. Ambitious to a fault, he is now dating Seiko (Sei Ashina), the daughter of the company’s founder-president (Morio Kazama), in hopes that he may someday become president himself.

But the president’s former secretary, Yasuko, starts blackmailing Takuya, saying that she is pregnant and he is the father, though there seem to be many candidates for the job. Seiko’s brother, Naoki (Yoshihiko Hakamada), hears of the blackmailing scheme and offers Takuya a solution to his problem.

In the previous episode of NHK’s yearlong historical drama serial “Go” (NHK-G, Sun., 8 p.m.), the powerful military leader Toyotomi Hideyoshi (Goro Kishitani) was gifted with a male heir after years of trying to produce one with his harem of concubines. The woman who provided this miracle was Chacha (Rie Miyazawa), older sister of the title character, played by Juri Ueno.

In this week’s episode, to air on June 19, Go is sent to Asahi, the wife of Shogun Ieyasu, and Hideyoshi’s sister. In the older woman’s company she meets Ieyasu’s son, Takechiyo (Osamu Mukai), who treats her with cynical condescension. However, he will become one of the most important figures in her life.

CM of the week: Otafuku Sauce:

The Kano Sisters, glamorous TV personalities noted for their large breasts and well-heeled foreign boyfriends, appear together to promote an instant yakisoba (fried noodles) product make by the Hiroshima-based sauce maker Otafuku. At the end of their endorsement, the siblings state frankly that they’ve never actually eaten yakisoba. An announcer explains that Otafuku is “the taste of the common people.”

The Kanos are hardly common, and part of their appeal is their parvenu status. It’s not entirely clear what the source of their supposed wealth is. In fact, many showbiz writers seem to feel that they were once the kind of girls who were intimately familiar with “the taste of the common people.”