Quick answer — "Ponkotsu! Isekai Theater" by Sumire Uesaka is the ending theme of Isekai Quartet 2.
"Ponkotsu! Isekai Theater" by Sumire Uesaka is the ending theme of Isekai Quartet 2.
"Ponkotsu! Isekai Theater" is performed by Sumire Uesaka.