Light novel series, Is It Wrong to Try to Pick Up Girls in a Dungeon? (ダンジョンに出会いを求めるのは間違っているだろうか), more commonly referred to as DanMachi, is five year old this year!
The publisher GA Bunko has launched a fifth anniversary campaign to celebrate the occasion, and that includes a mysterious new project as indicated in the promotional visual below. Japanese fans suspect that a TV anime season two is the said project. 
More details will be unveiled in due time.
Written by Fujino Omori (大森藤ノ), DanMachi follows Bell Cranel, an adventurer who fights in the dungeon in order to be a better man and a suitable man for his crush Aiz Wallenstein. More than nine million copies have been sold so far. A TV anime adaption was made in Spring 2015, followed by a spin-off anime in April 2017.
READ MORE:
• DanMachi is getting an adventure action RPG
• Mobile RPG DanMachi Memoria Freese gets English localisation in 2018
