He was born in 1967 and raised in Tokyo. After graduating from university, he worked for a major corporation but switched careers in 2002 to work as a freelance fashion journalist.
Iino specializes in men's fashion, including, but not limited to, suits, shoes, writing tools, and cologne. He also works as a lecturer at a fashion school and has written many books on clothing.
Some of his works include: "Men's Shoes: How to Choose from the First Step" (Asahi News Publishing), "Men's Clothing: How to Choose Clothes That Fit" (Asahi News Publishing), and "How to Take Care of Your Shoes" (Ikeda Shoten Publishing).