The brand's fifth game is Tomoyo After: It's a Wonderful Life, an adult game and spin-off of Clannad released on November 25, 2005, which expanded on the scenario of the heroine Tomoyo Sakagami from Clannad. Key released their sixth game, Little Busters!, on July 27, 2007 with no adult content, but released another version of the game entitled Little Busters! Ecstasy on July 25, 2008, with added adult content, story, and visuals. In commemoration of Key's ten-year anniversary, Key and Visual Arts held a two-day event between February 28 and March 1, 2009, called "Key 10th Memorial Fes: . Key collaborated with P.A. Works and Aniplex to produce the anime series Angel Beats! that aired between April and June 2010. Key's eighth game Kud Wafter was released on June 25, 2010, as an adult spin-off of Little Busters!, which expanded on the scenario of the heroine Kudryavka Noumi from Little Busters! and Ecstasy. Key released their ninth game Rewrite on June 24, 2011, with a rating for all ages, and an all ages fan disc to Rewrite titled Rewrite Harvest festa! was released on July 27, 2012. In commemoration of Key's 15-year anniversary, the visual novel adaptation Angel Beats! 1st Beat was released on June 26, 2015. Key again collaborated with P.A. Works and Aniplex to produce the anime series Charlotte that aired between July and September 2015. Key released the kinetic novel Harmonia on September 23, 2016, and it was available in English before its Japanese release on December 29, 2016. Key released the visual novel Summer Pockets on June 29, 2018; an expanded version titled Summer Pockets Reflection Blue was released on June 26, 2020. Key collaborated for a third time with P.A. Works and Aniplex to produce the anime series The Day I Became a God that aired between October and December 2020. Key announced the development of three kinetic novels in October 2020: Loopers, Lunaria: Virtualized Moonchild, and Stella of The End. Loopers was released on May 28, 2021. Lunaria: Virtualized Moonchild was released on December 24, 2021. Stella of The End was released on September 30, 2022. Key also revealed in October 2020 the multimedia project Prima Doll in collaboration with plastic model and figurine manufacturer Kotobukiya. A 12-episode anime television series for Prima Doll aired between July and September 2022. Key released the Planterian Ultimate Edition on September 3, 2021, which also included Planetarian: