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...
I will now test you to see if you're 
worthy of becoming a tomb guardian.
سأختبرك الآن لأرى ما إن كنت مؤهلاً
لتصبح حارس ضريح
Ich werde dich nun einem Test unterziehen, um zu
prüfen, ob du eines Grabwächters würdig bist.
Probaré si eres digno
de ser un guardián de tumbas.
Comprobaré si eres digno
de ser un guardián de tumbas.
Ora ti metterò alla prova per verificare che tu
sia degno di diventare un Guardiano del Sepolcro.
Vou testá-lo para ver se você é digno
de se tornar um guardião de túmulos.
Теперь я испытаю тебя, чтобы узнать, 
достоин ли ты стать стражем гробницы.