Also known as: Threads版深夜の真剣お絵描き60分一本勝負, 深夜の真剣お絵描き60分一本勝負, ロボトミー版深夜の真剣お絵描き60分一本勝負, アークナイツ版深夜の真剣お絵かき60分一本勝負, アズレン版深夜の真剣お絵かき60分一本勝負, 艦これ版深夜の真剣お絵描き60分一本勝負, ラブライブ版深夜の真剣お絵描き60分一本勝負, 真夏の夜のクッキー迫真お絵描き, JOJO版深夜の真剣お絵描き60分一本勝負, ポケモントレーナー版深夜の真剣お絵描き60分一本勝負, プリキュア版深夜の真剣お絵描き60分一本勝負, 深夜の真剣MMD60分一本勝負, ワートリ版深夜の真剣お絵かき60分一本勝負, 背景版深夜の真剣お絵描き60分一本勝負, utau_one, ラブライブサンシャイン版深夜の真剣お絵描き60分一本勝負
The Late Night Serious 60-Minute Drawing Game (深夜の真剣お絵描き60分一本勝負, Shin'ya no Shinken Oekaki 60-bu Ipponshōbu), or 1draw (ワンドロ, Wandoro), is a self-explanatory Twitter hashtag where artists are given a prompt and have an hour to exercise their skills.
The prompt is usually composed of three characters from a set copyright. Each copyright gets their own tag.
The challenge was originally started on May 13, 2013, by twitter user Monyomoke, establishing a prompt where participants were to draw Touhou characters Koishi, Nazrin, and/or Kasen. After a couple months, however, the organizer decided to quit, since he was tired. The role of organizer has since been passed over a couple of times.
The Touhou prompt is currently being hosted by @1draw_night. They also have a website which hosts the artworks posted at the hashtag, with the artists' permission.
Other accounts dealing with different copyrights have been appearing. Some tags may be defunct.