Associated Names二世の契り二世之约Lời thề nguyềnMarriage VowsSchwur der Zeit (German)Second Generation PromisesDescriptionMana is an ordinary high-school student who somehow travels through time to the Sengoku Jidai (the Warring States Period) and encounters Uesugi Masatora, one of the generals. He decides to protect her, while his rival Takeda Shingen targets her. With Mana knowing the outcome of this war, will he change the future?GenreDrama Harem Historical Romance Shoujo SupernaturalAuthor(s)Kanshuu Idea FactoryArtist(s)SAKURAI ShushushuStatus in Country of Origin4 Volumes (Complete)