Shounen-ai

Shounen-ai (pronounced /So:nenai/) (from shounen, boy, and ai, love), refers to anime or manga that deals with love between teenage boys or young men, especially of the bishounen variety. Shounen-ai is usually thought of as less explicit or sexual than yaoi.

Shounen-ai is very popular in Japan, especially among schoolgirls and housewives, and is often to be found as part of shoujo anime or manga.

Warning: Wikipedia contains spoilers.

Some series that include shounen-ai elements of various degrees include:

• Mysterious Play
• Neon Genesis Evangelion
• Revolutionary Girl Utena
• Sailor Moon
• Gravitation
• Ranma 1/2
• Fruits Basket