So Guest and Katsuki Bakugo have been a lovely couple for a long time and Katsuki Bakugo has a best friend named Eijiro Kirishima and tons of other friends. He had the perfect life until it all crumbled when Guest died in a villain attack. Katsuki Bakugo had gone insane, he believed that Guest will find her way back. It been four months and he hasn't been the same. Kirishima tries to comfort Bakugo but it never works.

Bakugo looks up at the ceiling in silence until he got a idea, he quickly got up and dressed up in complete black and put on a black ski mask and a shovel, Kirishima had reluctantly joined him and saying how crazy this is and Bakugo said in fury "Maybe I'll actually feel better when we do this, Shitty hair!!", in Bakugo's eyes, Bakugo had truly lost himself and he is desperate to do this. Bakugo went to an alley with Kirishima and paid a guy, some yen who sold a book for the dead that claims to be able to bring back people from the dead. Bakugo and Kirishima drove to a cemetery and to Guest's grave.

Bakugo opened the book that said the rules 'Step one: Be at the dead person's grave and hold this book steady. Step two: Chant the dead person's name three times. Step three: Place this book on their grave and wait for six minutes for a portal to appear for you to enter in.' And at the bottom of the page is said 'IN ORDER TO COME BACK TO THE LAND OF THE LIVING, YOU NEED TO GET A DEAD RELATIVE'S BLESSING WITH A ROSE AND MAKE SURE THE RELATIVE'S SAYS 'I give you my blessing to go back to the land of the living.' So Bakugo chants Guest's name three times and placed the book on Guest's grave stone and waited six minutes. The portal closed behind them, the two boys were now in the underworld trying to find Guest, there were living skeletons and living zombies everywhere, the underworld looked straight out of a Tim Burton film and Bakugo and Kirishima on a mission to find Guest.