All versions of Miyuki's Haunted Summer, including some variations you won't see on DA. I like the "Lyta Rodriguez anti-swimsuit" (wet t-shirt, bottomless) for Miyuki too, at some point she'll have to go on an adventure in nothing but a white t shirt, that keeps getting wet...
The Shark Yokai (Kojin/Samebito) is actually not malevolent at all, in the legend in which he appears he's both compassionate and helpful (and the story kicks off with him having been fired from his job, oddly). He is a giant black shark demon though, which has got to be unsettling.
I realized it looks like he's trying to untie Miyuki's bikini bottoms; given her usual goals include taking her clothes off at some point, he is in fact being helpful.
Enjoy,
-D