Shakugan no Shanatan Tri continues the chibi-Shana series with a new anime short, probably the first one to deliver no "Uruchai uruchai uruchai!" whatsoever. This one was included with the 3rd volume of the Shakugan no Shana S OVA, titled "Overture Part 1", which came out in Japan on June 25, 2010. The next OVA episode - "Overture Last Part" - will also be the final one, when it's released this September 24.