Biography
Ayase's cousin, who auctioned him off to try to repay his debts.
Appearances
Tetsuo Ishii FAQ
What anime is Tetsuo Ishii from?
Tetsuo Ishii is a character in Okane ga Nai.
What is Tetsuo Ishii's Japanese name?
Tetsuo Ishii is written 石井 鉄男 in Japanese.
Where can I watch Tetsuo Ishii?
Open the Okane ga Nai page for licensed streaming links and the full episode list.