Tokyo Ghoul, Rize Tries to Kill Me at the Start

Byakuya is transported to the world of ghouls. He's being pursued by Rize, an SS-rank ghoul, and has already agreed to a date. However, he knows Rize sees him as food, and if he goes, he'll be facing his thesis defense tomorrow… Luckily, his system activates in time, allowing Byakuya to go on his date with Rize! But after using Byakuya, Rize plans to discard him! Thus, Byakuya is forced to fight back!