Gin-san's invited to a Joi Rebels reunion, where he finds Katsura and Sakomoto, fellow survivors of the Joi War era, reminiscing about the past. Sick of seeing them in OPs and EDs all the time, Gin-san tries to leave immediately, but he's shocked by the revelation that the organizer of the reunion wasn't Katsura or Sakomoto, but rather the phantom fifth man, Kurokono Tasuke.
I think this is the note he left the Kiheitai
أظن أنها الملاحظة التي تركها للكيهيتاي
Esta fue una nota que le dejó al Kiheitai 
cuando tuvo que irse unos cuantos días.
Acho que essa ele deixou ao Kiheitai