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.

Based on the paragraph above can we conclude that "The subject revolves around teenagers."?
It's impossible to say