Badump Date Super Plan: Answer
A continuation of Episode 4 "Badump! Date Super Plan". Shiki and Shirou attempt to simultaneously date all of their heroines at once in a single day with disastrous results. The Ahnenerbe holds a party to celebrate the end of the series, and it includes various characters that haven't appeared in the series from Fate/Zero, Kara no Kyōkai, and Notes. The final segment features Ayaka Sajou calling Ahnenerbe as a lead in to Fate/Prototype.
Aired 31/12/2011EP 12 - Badump Date Super Plan: Answer
Carnival Phantasm
The Carnival Moment is a time when several narratives from Type-Moon's famous works intersect. It happens every decade in an entirely new dimension, and those who have never run into each other can meet. And what's more, all individuals involved gain the opportunity to fulfill any of their wishes! However, they will have to come a long way, as they will need to partake in contests.
In Carnival Phantasm, various characters are put into situations that ridicule their own worlds. Nevertheless, they all have the same objective: to win the contests by any means necessary!
(Source: MAL Rewrite)
Note: Adaptation of the "Take Moon" manga series by Type-Moon's Eri Takenashi, created to celebrate Type-Moon's 10th anniversary. It features parodies and new stories loosely based on Type-Moon's original works, including Fate/stay night, Tsukihime, Melty Blood, and more.