The September issue of Hakusensha's LaLa magazine announced that new one‑shot chapters of Shinobu Amano's Last Game and Matsuri Hino's Vampire Knight will appear in the August 4 issue, as part of the magazine's 50th anniversary celebration. Both new chapters are part of a series of special one‑shot releases that also include Maid Sama! and Soredemo Otōto wa Koishitagaru, which were published in the July 24 issue. The Last Game chapter depicts a scene in which Yanagi proposes to Kujou. The Vampire Knight chapter shows the characters before they enter high school. Shinobu Amano launched Last Game in LaLa in July 2011 and concluded the series in 2016; the manga was compiled into 11 volumes, the final volume released in December 2025, and is published in English by Seven Seas Entertainment. Matsuri Hino began Vampire Knight in LaLa in 2004, and the series ended with its 19th compiled volume in November 2013; the final volume was released in October 2014 in North America by Viz Media, and an anime adaptation followed in 2008. Vampire Knight: Memories, a separate series that collected bonus chapters, was published in LaLa DX beginning in June 2016 and concluded in August 2025, with its 11th volume issued in December 2025; Viz Media released the 10th volume in October 2025. The 50th anniversary celebration also highlighted the magazine's long history of featuring shōjo manga. The announcement marks a continued effort by LaLa to commemorate its anniversary with new content from established series.