Isekai Onsen Ni Tensai Shita Ore No Kounou Ga Tondemosugiru is a light novel about a high schooler named Atami Kusatsu who dies on his way to an onsen, only to wake up to find that he is an onsen himself somehow.
- Genius Loci: The main character is this; takes a while for the rest to even notice he's sentient.
- Hot Springs Episode: The whole series is one of these, naturally.
- Improbably Female Cast: Averted. Two or three male characters visit sometimes.
- Noodle Incident: Kumu's collar is from one. It took ten chapters for it to even be asked about. She reveals that it seperates a second soul she is carrying due to her being an Artificial Human.
- My Sister Is Off-Limits!: Played with. Leticia tells Atami not to show his Astral Projection infront of Liza, because when he does, it won't have the clothes he died wearing on.
- Power Incontinence: Leticia's sister Liza causes explosions of mana due to an illness which makes her generate too much of it.