Carnival Phantasm

Carnival Phantasm (カーニバル・ファンタズム, Kānibaru Fantazumu) is an OVA series based on the Type-Moon gag manga, Take-Moon (テイク・ムーン, Teiku Mūn) by Eri Takenashi. The OVA series was created by Type-Moon to celebrate the company's 10th anniversary.

Plot
How do you resolve a conflict between powerful spirits of famous heroes for a prize capable of granting any wish? Wage a war that will cost your blood, sweat, and tears? Too much work—how about a game-show competition instead?

Carnival Phantasm takes a number of characters from Type-Moon's original works, and puts them in a variety of light-hearted scenarios which parody their respective series. Watch Lancer suffering due to his low luck stat, or watch the egotistical King of Heroes gladly kneel to a dominatrix King of Knights. Just remember to leave your sanity at the door.