Donten: Laughing Under the Clouds - Gaiden: Chapter 1 - One Year After the Battle

曇天に笑う＜外伝＞～決別、犲の誓い～

Also known as Donten ni Warau Gaiden: Ketsubetsu, Yamainu no Chikai, 흐린 하늘에 웃다 외전: 결별, 야마이누의 맹세, 흐린하늘에웃다 외전: 결별, 야마이누의 맹세, Donten: Nụ Cười Dưới Mây Trời – Gaiden: Chương 1 – Một Năm Sau Trận Chiến

One year has passed after the great battle against the Orochi (gigantic snake). Tenka Kumo had been paralyzed from the final battle and he took part of the government’s human experiment before the battle. Tenka withdrew himself from society but his younger brothers Soramaru and Chutaro find out the secret past about their older brother.