The sticker is an advertisement for the upcoming OVA, saying it's made by the same staff of Tenchi Muyo and El-Hazard.
「天地無用!」「神秘の世界エルハザード」のスタッフが? OVA化決定! SFスポーツアクション! (can't read some of the small text)
Based on that I'd say it's more related to the game, however it's listed on geneon's page for the OVA so not really sure:
http://www.geneon-ent.co.jp/rondorobe/anime/daiunova/