Quote from junaid_9j
wasn't Nabari no Ou in shounen-ai genre before? when did they changed it. I remember seeing it there before. After I saw the anime I definately thjought it was. I would say Get backers is a gayish. Even though I liked its concept and action. Never read or watched Naruto or prince of tennis...they are too long for me...as for CLAMP they always put a small part of shounen-ai or shoujo-ai in each and every one of their mangas.
It's sub-text(ty) but then again, if one of the characters is technically asexual, then the gender could go either way even if the person looked male...
Kinda how RG Veda may be seen as shonen-ai from the perspective of the relationship between Yasha and Ashura, but then again Ashura is asexual and is neither male or female...so in those cases everything is very subjective....
Now to answer the topic's question, the first manga that came to my mind was
Game x Rush....I mean they are very good friends, but it's easy to interpret that friendship as "something more" if anybody wants to....
There's also
Zig*Zag by Nakaji Yuki...Taiyo and Kirihara sometimes have "moments"...
Bring it On!, maybe if you look hard enough some people might see something because his best friend is very possessive of him to the point of
Spoiler (highlight to view)
pretending to like the same girl to make him feel bad then taking him away for the whole day and not letting him know that the girl had called him 15 times and breaking his phone, then after he got transferred and moved away keeping the letters that the girl wrote to him away from him
some people might find something to think about at least
Some parts of
Fruits Basket made me think
Tsubasa o Motsu Mono mono had it's parts too as well as
Phantom Dream (The last volume, mostly)