When the Mob Psycho 100 staff announced the OVA, many people didn’t believe it because they announced it on 1st April, April Fool’s Day. However, they are really doing the OVA and are pushing through with the anime. They even released a new key visual and announced its release date on 25 September 2019.
They also revealed the OVA’s official title, which is Mob Psycho 100 Dai Ikkai Rei to ka Soudansho Ianryokou ~Kokoro Mitasu Iyashi no Tabi~ (Mob Psycho 100: The Spirits and Such Consultation Office’s First Company Outing ~A Healing Trip that Warms the Heart~). It will be available on both Blu-ray and DVD formats.
The staff also revealed that on the forst day of the OVA’s release, they will hold a special release event over at Animate Akihabara with Mob’s seiyuu, Setsuo Ito, as a guest.
Mob Psycho 100’s mangaka himself, ONE, will be writing the OVA’s story concept. BONES will once again be animating the series, with Yuzuru Tachikawa returning to direct the anime once again.
source: Comic Natalie