I think Saruhiko would thirst a lot for Kamamoto's thighs.
Maybe Fushimi just really does like thick thighs, all the better to rest his head on. Like he complains about Kamamoto taking up all the room in the bed but he also likes just lying down with his arms draped over Kamamoto’s thighs or using Kamamoto’s thighs as a pillow. They’re actually not as soft as he expected, I imagine Kamamoto is probably pretty muscular all things considered, but that just makes it more comfortable somehow. He wouldn’t admit that he’s attracted to them but Kamamoto has definitely figured it out, when asked Fushimi denies it in a way that he only does when he’s too embarrassed to be honest. Kamamoto enjoys knowing that Fushimi likes his thighs too, imagine them lounging around together and Fushimi is just idly stroking Kamamoto’s thighs. Kamamoto grins and says Fushimi really enjoys that, Fushimi denies it but he’s obviously pretty attracted by the sight. I also imagine Fushimi also probably likes that only he gets to really get a good look at Kamamoto’s thighs, since normally in the winter Kamamoto is wearing the heavy sweatpants. In the summer sometimes Kamamoto wears shorts or a swimsuit but his thighs are less interesting then, it’s really in the winter when only Fushimi gets to see them properly and appreciate them.














