|Hot Springs Planet Tenrei|
|Outlaw Star episode|
|English Title||Hot Springs Planet Tenrei|
|Japanese Title||"Onsen Wakusei Tenrei" (温泉惑星天鈴)|
|US Airdate||February 24, 2018|
|Japanese Airdate||June 4, 1998|
|Previous Episode||"Gravity Jailbreak"|
|Next Episode||"Cutting the Galactic Leyline"|
"Hot Springs Planet Tenrei" is the twenty-third episode of Outlaw Star. The episode aired June 4, 1998 on TV Network in Japan. The episode previously went unaired on Cartoon Network's Toonami and Adult Swim on account of adult content. It premiered on Adult Swim's Toonami block on February 24, 2018.
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. Meanwhile, Tobigera of the Anten Seven closes in on Gene, but ends up comically beset by the hot spring's many traps.
- 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.
- When Outlaw Star aired on Cartoon Network's daytime version of Toonami (the network's block for action cartoons -- mostly imported from Japan, though there was a time Toonami aired reruns of 1980s American action cartoons, such as the original Thundercats and G.I. Joe: A Real American Hero) in 2001, this episode was skipped due to the excessive nudity and sexual humor/content. Three years later, when Toonami became part of Cartoon Network's Adult Swim block (dedicated to animated series rated TV-PG and over), the same edited run of Outlaw Star aired and, once again, "Hot Springs Planet Tenrei" was skipped over. It wouldn't be until 2018 that Adult Swim would finally air Outlaw Star (mostly) uncut and uncensored and include this episode, albeit with one edit: the scene of Aisha flailing in the hot spring, standing up, and leaving while ranting that the hot spring isn't hot enough for her had Aisha's nipples digitally removed. Conversely, Cartoon Network's UK channel (back when Toonami was on in the daytime) did air this episode, but the editing to remove sexual content and nudity from their version was so extensive that the episode was too short to air in its timeslot and was shelved.