Kono Subarashii Sekai ni Shukufuku wo! Kibou no Meikyuu to Tsudoishi Boukensha-tachi!

Taking place after the crisis in Alcanretia, Kazuma and friends return to their mundane hikikomori lifestyle....that is until Aqua picked up a mysterious glass piece. They took it to Vanir's appraisal for assurance where they learn it is a magic stone piece with immense power and worth... 10,000,000 Eris!!