Suigin is pulled into the world of “Grave Buster” by a woman named Twin Star. Surprisingly, Suigin ends up meeting his grandfather, Riku Yuuki, who should’ve been dead, and he can’t hide his doubts about this whole situation. Then a woman named Shostia performs a ritual that reawakens Suigin’s childhood memories. Before they can enjoy their reunion, they are attacked by someone...
You must defeat them with me. 
That will be your test.
يجب أن تهزمهم معي، هذا هو امتحانك
Du musst sie mit mir erledigen.
Das ist dein Test.
Debes vencerlos conmigo.
Esa será tu prueba.
Debes vencerlos conmigo.
Esa será tu prueba.
Nous devons les vaincre.
Devi sconfiggerli insieme a me.
Sarà questa la tua prova.
Você precisa derrotá-los
comigo. Este será seu teste.
Ты должен вместе со мной отразить 
их нападение. Таким будет твоё испытание.