Earlier sculpture constructed in 2013
Back in August 2013, with the release of volume 11 of the Attack on Titan, sand sculptor Hosaka Toshihiko ventured outside the walls on a trip to Enoshima Higashihama beach to construct a tribute sculpture out of 80 tons of sand. Now, volume 23 has hit Japan and Toshihiko is back for a follow-up. The scene for the sculpture may be season 2 of the anime, but the promotion is tied to the manga and readers will know why its thematically appropriate.
Manga magazine Bessatsu Shōnen Magazine has been posting a look at its development and running a social media contest with 50 prizes including an "army issue" 5000yen pre-paid QUO card.