|Hot Springs Planet Tenrei|
|Outlaw Star episode|
|English Title||Hot Springs Planet Tenrei|
|Japanese Title||"Onsen Wakusei Tenrei" (温泉惑星天鈴)|
|Japanese Airdate||June 4, 1998|
|Previous Episode||Gravity Jailbreak|
|Next Episode||Cutting the Galactic Leyline|
"Hot Springs Planet Tenrei" is the twenty-third episode in the Outlaw Star series. The episode aired June 4, 1998 on TV Network in Japan. The episode was never aired on Cartoon Network's Toonami or Adult Swim on account of adult content.
The crew of the Outlaw Star take a much deserved break on the planet Tenrei during Gene's search for more caster shells at their presumed point of origin, Mt. Nantai. On the mountain he meets three wizards, Ark, Hadul and Urt, all whom provide crucial information about his antiquated weapon.
- When Ark greets Gene for the first time, he distinctly mentions his red hair and caster gun. This is a reference to Juji Godoh, the protagonist of Space Hero Tales, which took place in the Fixed Star Era. Like Gene, Godoh is a redhead and wields a spell gun, a weapon used by a caster.
- A small figurine of a pirate flies out of a barrel when it hits Tobigera. This is a reference to Tomy's "Pop-up Pirate" - a children's game which originated in Japan.
- When Aisha is being carried by one of the resort's staff, her sleeves are the same color as her skin.