Is banana fish gay

It seems like the general view is that you can have a really deep, close, protective relationship that's "just friends" but as soon as you add physical intimacy into the mix, you become lovers. And I don't really think that's true anymore, after examining my thoughts post Banana Fish.
One of the most notable elements of Banana Fish is its homoerotic nature. Despite not being an official Boys Love series, Banana Fish has several cross-genre elements that were influenced by BL.