He wasn't an expert in this field. Things in this field are most definitely not his niche. So when Dean Winchester realizes that he is in love with an Angel of the Lord, he can't help but be surprised. Destiel One-shot
Miyamura had many reasons for his piercings. He liked earrings and lip rings. He liked how cool they seemed. He thought that it would look nice. He thought that it was a good conversation starter. So many reasons... but if he were completely honest with himself, he thought it was a better alternative.