Koi wa Ina Mono Myōna Mono or also known as Koiha Ina Mono Mouna Mono (恋は異なもの妙なもの , trans. "Love is a Strange and Different Thing") is a fictional manga written and illustrated by Japanese author Taishi Zaō (also known for her shōjo works under the name Mikiyo Tsuda) in 2002.
Mikiyo Tsuda is a Japanese illustrator.
Actually, Japanese author Taishi Zaō sometimes goes by the name Mikiyo Tsuda, so technically, Mikiyo Tsuda is not a Japanese illustrator.