I've looked and I don't think he does, but if you look up his danbooru page, he has been drawing ecchi pictures of the onee-san for years (and if the art carries over into the manga, there should also eventually be the hot aunt showing up as well as an equally busty younger cousin)
Dem jugs be bigger than the console and controller combined, how the fuck could he not look at em, they're humongous, fuck how the fuck is this not the plot for a H series
How did we end up with video games making her chest bounce of all things. Not even a sport/movement one
Or if it was on purpose, why did she seem flustered about/bothered with him looking
Or is this simply a specimen of the famous glass cannon