The end of the third season today of Fate/kaleid liner Prisma☆Illya 2wei Herz! has revealed that a fourth season is on the works with Fate/kaleid liner Prisma☆Illya 3wei Herz!. While no details are provided, it’s easy to see a pattern and expect that it will hit next summer and run very similar in structure to this one.
Each season has run for ten episodes once again and were directed by Shin Oounuma based on scripts by Hazuki Minase.
This will mark the third season of the property that deals with the alternate world setting from the Fate/stay night universe as written and illustrated by Hiroshi Hiroyama. The series began in 2007 and has run several short-run series with each working its own progression and theme while tied to the larger work.
Sentai Filmworks has licensed the first three seasons and released the first series on DVD and Blu-ray in bilingual form.
Property concept: Spin-off of Fate/stay night with Illyasviel von Einzbern as the protagonist, living an alternate life as a school girl. While taking a bath, she stumbles upon Kaleido Stick Ruby, who turns her into a magical girl.