Tate No Yuusha No Nariagari Episode 23 -

"The Rising of the Shield Hero" Season 1, Episode 23, "Cal Mira Archipelago," follows Naofumi, Raphtalia, and Filo to a remote archipelago for high-stakes, experience-point grinding, temporarily shifting focus from political drama to adventure and character development. The episode introduces new allies L'Arc and Therese while setting up an urgent upcoming battle against a Wave of Catastrophe, as highlighted by reviews on Anime News Network .

This is the original version of Bvckup. It was written for Windows XP, last updated in 2010 and it's now well behind times. Use at your own risk, basically.
It has been superseded by Bvckup 2 - a faster and significantly more refined revision of the same idea. Have a look.
http://www.bvckup2.com