Before the chosen are permitted to participate in the battle where he who comes first loses, they are first duty-bound to undergo a health check (primarily of certain lower body parts)!

Notes:
- Previously released as a one-shot under the title "Pulau Senki: Jizen Shinsa-hen (プラウ戦記～事前審査編～)" in the Immoral Sex (インモラル・セックス) anthology.
- Includes two extra chapters.