Rune's Pharmacy: Tiarajima no Okusuriya-san Episode 4

The town bridge on Tiara Isle collapses after a large earthquake and to fix it, a large amount of silver metal is required, so Rune is off to the cavern to search for it. In the cavern, Rune is assaulted by slimes, and Sharvan saves her just in time. However the only thing she can do to thank him is offer him her body...