Ikemen Sengoku: Bromances Across Time - S01

"Sasuke Sarutobi" is an ordinary college student at Kyoto University who studies time slips as a hobby, until the day he falls into one himself and ends up in the Sengoku Period. Once there, Sasuke meets several warlords he had only ever dreamed of meeting: Toyotomi Hideyoshi, Tokugawa Ieyasu, and the famous "Demon King of the Sixth Heaven" Oda Nobunaga, who takes him in as a vassal. By introducing the warlords to various modern ideas, from playing tennis to sending chain letters, Sasuke finds his place in an old but completely new world.