A Moonlit Journey - The Answer Lies in a Masterpiece -:Viewers find the unusual pairing of "Luna" (Haru) and "Ryoko"(Kumiko Aso)"pleasant," and are surprised by Luna's "true identity" (spoilers included).

The first episode of the NTV drama series "Tsukiyo Koro - The Answer Lies in Masterpieces -" (Wednesdays at 10 PM), starring Haru and Kumiko Aso(Haru) and housewife Ryoko Sawatsuji (Aso), and their solving of a case in Osaka during a trip. The interactions and atmosphere between the two characters became a hot topic on social media.

◇The following contains spoilers.

In the first episode, on her 45th birthday, Ryoko is tailing her husband, Kikuo (Naoki Tanaka), in Ginza at night when she meets Luna, the owner of a bar. Luna, a serious literature nerd, uses her keen observational skills to decipher Ryoko's background one by one, and even sees through her lingering feelings for her college sweetheart, Kazuto (Ryuto Sakuma), which she had kept hidden deep in her heart. Ryoko is persuaded by Luna's forceful invitation and heads to Osaka to search for Kazuto.

However, what awaited them on their journey was the discovery of the bodies of a man and a woman embracing at Tsuyuten Shrine, the setting of Chikamatsu Monzaemon's "Sonezaki Shinju." When Luna was questioned by the police along with Ryoko, Detective Tamura (Shuntaro Yanagi) asked if she had a twin brother, and said, "There was a guy named Nomiya who was a classmate of yours in high school. He looked a lot like you," to which Luna revealed that she was that classmate.

Later, Luna and Ryoko witness the scene of Aiko (Nozomi Sasaki), the wife, lamenting her husband's betrayal and death. Luna uses her literary knowledge to deduce the truth from Ryoko's casual remarks. She discovers that it wasn't a double suicide, but rather the work of Aiko, who had been suffering from her husband's domestic violence, and her lover, and thus solves the case.

On social media, Luna and Ryoko's "unusual buddy" pairing became a hot topic. Comments included: "Their combination is wonderful," "A literature-obsessed mom and a stay-at-home wife as a buddy, what a great pairing!", "Even though Luna and Ryoko have just met, their dynamic is just right and it's pleasant to watch," "Their banter is fast-paced," and "Haru and Aso's buddy pairing is strong!"

Furthermore, it was revealed through a conversation between Luna and Tamura that Luna was formerly male, leading to surprised comments such as, "I was surprised to learn that Luna was formerly male," "It was so unexpected that she was formerly male," and "I was really surprised that Haru was formerly male. And that she was classmates with Yanagi Shuntaro."