"「お手紙収集祭り応援ガチャ」開催のお知らせ". puyopuyoquest.sega-net.com (in Japanese). November 23, 2018. Archived from the original on January 9, 2022. Retrieved January 9, 2022.
"「お手紙収集祭り応援ガチャ」開催のお知らせ". puyopuyoquest.sega-net.com (in Japanese). November 23, 2018. Archived from the original on January 9, 2022. Retrieved January 9, 2022.