Koha-Ace (コハエース, ?) is a parody manga by Keikenchi. It stars Kohaku and features characters from various TYPE-MOON series. It is drawn in a super deformed style, and it is a self-aware series that constantly breaks the fourth wall. Carnival Phantasm included segments based on the series, and it was the focus of the 2012 April Fools' Day joke.
- Masters and Servants
- Sakura Saber - Okita Souji
- Kohaku - Sakura Saber's Master
- Akiha - Kohaku's master
- Demon Archer - Oda Nobunaga
- Master Artoria - Demon Archer's Master
- Rider - Sakamoto Ryoma
- Lancer - Li Shuwen
- Caren Kotomine - Lancer's Master
- Berserker - Mori Nagayoshi
- Major Matou - Berserker's Master
- Assassin - Okada Izou, initially portraying himself s Saber-class Sakamoto Ryoma.
- Caster - Maxwell's Demon
- Third Reich