Well, I have had Hoshi for nearly a week now. At first I though he was roughly 3 months old but now I think he is about 6-8 weeks old. Y, my vet, will pay a visit sometime this weekend to give Hoshi his first shots. Hoshi started out living in a big box for a couple days before I moved him outside. He is very feisty and aggressive still, most likely since his mother was a feral cat. I bought a pink crate for him and he seems to be adjusting to it.
Today was the second time I was able to hold Hoshi for a long period of time. He slept on my stomach while I took a nap but when I woke up, he went back to the crate. He is no longer hissing at me, just meows so that is a good sign. Most kittens I have ever raised would start coming to me after a couple days but I read online that it takes feral kittens much longer.
Below is a shot of his new crate and video of him meowing on me.