God's Tear

Information
Under normal circumstances, no, no it is not. In terms, you might understand... the materials to hold such a ritual would normally cost about one hundred billion DP. But there is a certain, special item that circumvents all that

It could reduce the cost of a Hero summoning ritual to basically nothing. The item itself was worth basically nothing, but you could use it to have God pay for the cost of summoning a hero, or something. Essentially, it was a “Free Hero Ticket.

Story
Prior to Volume 3, This item was used to summon Wataru Nishimi to this world from Japan.