It's undoubtedly the best Asian drama I've seen (alongside Algernon Ni Hanataba). The story line is extremely sensitive, subtle and profound. Every episode is completely fulfilled, without unnecessary elements and without this usual feeling of intentionally prolonging the series. Also I love the atmosphere: rainy and green, provided with delicate sensation of nature as a shelter for a human soul. Even the soundtrack suits the drama perfectly. All the main characters are incredible: Nishikido Ryo, Erika Sawajiri and Fujiki Naohito are capable to transmit the pain with an absolute and touching credibility. Furthermore, it's impossible to stop crying while you watch it, even, if you aren't extremely sensitive. I've watched this drama numerous occasions and I think I will continue this tradition.