And here's the answer:
This Winter 2009 NTV drama was based on the same-titled manga by George Akiyama and featured Matsuyama Kenichi in the leading role of Gamagoori Fuutarou. Sporting a scar on his left eye, this was one of Matsuyama's signature roles because he managed to show the different sides to his character which made him appear detestable yet pitiful at the same time. Co-stars included Mimura, Kinami Haruka, Yamamoto Kei, Miyagawa Daisuke, Mitsuishi Ken, Ryou, Ishibashi Anna, Okunuki Kaoru and Shiina Kippei. The first hint "Sayonara" was the title of its theme song sung by Kariyushi 58 while the second hint was the season when it was shown.
Here is the leaderboard at the end of Round 5 (only for players who have at least 10 points):
AlexAndrA ☆ 玉森
As we enter the next quarter of the game, hope that you can pick up more points along the way to boost your ranking.
Here is the question for Round 6. Please listen to this song and tell me in which drama did this appear. If you get this right from now till 11.59am (GMT +8), you will get 5 points.
UPDATE 1: Here comes the first hint to help you in this round:
If you get the correct answer from now till the next hint is revealed, you will earn 3 points. Hope to see your answers soon!
UPDATE 2: Here is the last hint for this round:
Mitara juusannichme ni shinu 見たら13日目に死ぬ (If you watch it, you will die on the 13th day)
You will get 1 point if you give me the correct answer from now till 11.59pm (GMT +8).