King Records's Starchild label announced that they will offer an original OVA to Japanese customers that purchase all three upcoming Sayonara Zetsubou-sensei Blu-Ray sets. To claim their DVD, customers must send in the proof-of-purchase forms included with the upcoming boxed sets for Sayonara Zetsubou-sensei, Zoku Sayonara Zetsubo Sensei , and Zan Sayonara Zetsubo Sensei.

The first Sayonara Zetsubou-sensei boxed set will hit Japanese retailers on March 23, with the sets for Zan and Zoku hitting on May 25 and July 27, respectively. The deadline to turn in the forms is August 23, and bonus discs are expected to be sent to customers by the end of October.