Grand Nero Fest Summer 2023 is the rerun of the 2019 Nerofest Event featuring the release of Nero Claudius' Bloomers costume. The Summoning Banners feature 5* Brynhild (Lancer), 5* Nero Claudius (Caster) and Astraea, as well as the set of limited Craft Essences from the Event. There will also be a 2x Success Rate Campaign during the Event to help Masters level up their Servants.

Masters who have previously purchased the costume will get their 5 Rare Prisms refunded. The Event uses the same bonus Craft Essences as the original 2019 Event, so check your archives for those if you played back then!