The cover caught my eye because of the matrix feeling, but I do not think this is related to the story? don't get me wrong, I like the story, but the cover is not good for it (I cannot do better, but I tried imgur.com/a/kWJenh5)
To sugarcoat it, the cover is simply disturbing. I don’t really get what the cover represents. Maybe you are inspired by matrix-like green thingy (I forgot what it’s called and too lazy to google it), hence the name foo and hacking title etc. I think the cover and the title can grab someone’s attention to read it (it did to me), but as I said before it doesn’t really represents the story and may not work much in the future. I still don’t know what to suggest though. Need to read some more chapters to get the idea of the story and make suggestion.
On the other hand, keep it up!! I love this kind of story, but please NO HAREM nor too OP MC destroying everything he faces. Something like LHP or IRAS is acceptable though.
Ash009