Tomokazu Sugita Steps Out of Rudeus's Head
For three seasons, Tomokazu Sugita (Gintoki Sakata in Gintama, Kyon in The Melancholy of Haruhi Suzumiya) has been the voice in Rudeus's head, the "man from his previous life" who narrates from the inside. Episode 12, titled "Owari to Hajimari" ("An End and a Beginning" in the Crunchyroll listing), finally puts that voice in a body. The old man who interrupted episode 11 is Rudeus himself, about 50 years on, and Sugita plays every minute of his slow physical collapse.
The episode is almost nothing but that conversation. There's no battle and barely any movement, and yet Japanese viewers, in reactions compiled by Japanese anime news site Anime Anime, described being "completely overwhelmed by an episode that was only talking," with several describing 30 minutes of nonstop tension and one saying it felt like living the same 30 minutes as the protagonist. One comment summed up the mood of the thread: the actor who had only ever been Rudeus's inner voice was now delivering a performance so anguished it made people cry.
Sugita is already a fixture of the Season 3 promotion. He hosts the web radio show "Mushoku Tensei III Kokoro no Koe Radio" on the TOHO animation YouTube channel, credited under his role as the man from Rudeus's previous life. Episode 10 of the show streamed on September 12, the day before this episode aired.
Roxy, a Rat, and a Plate of Leftovers
The hook that got the Japanese internet talking is how blunt the old man's warning is. In episode 11 he had stopped Rudeus with "Don't go to the basement. Hitogami has deceived you." In episode 12 he explains what happens if Rudeus goes anyway: a few weeks later, Roxy dies.
The mechanism is almost absurdly small. There's a rat in the basement, and the rat is sick. Anything it gnaws on carries the disease. A peckish Roxy sneaks a bite of dinner leftovers that the rat has already chewed, and she's infected. The condition is called magic stone disease (魔石病), which gradually turns the body to magic stone and eventually kills the host. Humans rarely catch it, but the old man says Roxy had a specific reason she was vulnerable.
Reactions ranged from stunned to darkly funny. "Roxy dies from sneaking a snack? lol" was a common refrain, alongside "Roxy dies because she's greedy about food?!" More than one viewer noted that "Roxy dies" is, on its own, more than enough reason for the warning.
The old man goes further. He says the full chain of events only becomes clear another 30 years after that, and it traces back to Hitogami, the Man-God whose advice Rudeus has been following. "That guy is the root of all evil, the final boss," he tells a shaken Rudeus, before adding warnings about what awaits Nanahoshi and Sylphiette. His line about Hitogami, delivered like it costs him something to say, is simply: don't trust him, you'll regret it.
The Vegetable Kingdom Prince Survives the Cut
The Eris section of the conversation is where the episode briefly lightens up, and where novel readers got the payoff they were watching for. The old man begs Rudeus to write to Eris immediately. Rudeus pushes back with the obvious objection: she's the reason he became impotent.
The old man admits he never forgave her either. In his timeline the two of them clashed, and she nearly killed him several times. But she also kept quietly bailing him out whenever he was in trouble, which he describes, with real affection, as being "like the prince of the vegetable kingdom." In the original novel the line continues with a barely censored Vegeta name-drop, and novel fans were thrilled the anime kept it: "The vegetable kingdom prince made it in uncut, I laughed," "I assumed the anime would skip it," and "Thank you for not trimming that line."
Then the old man gets to the point. His body is visibly failing as he lays out three instructions:
- Consult Nanahoshi.
- Send a letter to Eris.
- Doubt Hitogami, but do not make an enemy of him.
Rudeus barely has time to say "You can't just spring this on me" before the old man's time runs out. He collapses and presses his diary into Rudeus's hands. His last sight is Sylphiette and Roxy on the other side of the door. Viewers connected that to the Eye of Foresight, with comments like "If nothing else, this scene alone made his trip to the past worth it" and "At least he got to see the two people he loved at the very end."
When Rudeus opens the door, Sylphiette (Ai Kayano) and Roxy (Konomi Kohara) are standing there, asking whether someone is in the room or whether it's a burglar. He talks his way out of it, asks both of them not to leave their rooms for the rest of the night, and then, alone, heads down to the basement. The rat is there. The episode ends with him opening the diary.
Looking Ahead
Episode 13 is titled "Nikki" ("Diary"), and the novel-reading side of the fandom is bracing for it harder than for episode 12. "You can tell how bad the contents are just from that bloodstained cover," wrote one. Others were less measured: "Adapting that diary straight is impossible, it'll traumatize people," and "Everything up to now was character introductions. The real story starts here." Other viewers, meanwhile, are asking how next week could possibly top this one.
Mushoku Tensei: Jobless Reincarnation Season 3 is produced at Studio Bind under director Ryōsuke Shibuya, with Yumi Uchiyama as Rudeus and Shion Wakayama as Nanahoshi. The season kicked off on July 5, 2026, with an arc following Eris's training days before moving into the Chaos Breaker arc and the arrival of Perugius, the Armored Dragon King. Yuiko Ōhara sings the opening theme "Ketsui no Uta" and Mika Nakashima the ending theme "Inori, Owareba."
In Japan the show airs Sundays at midnight on TOKYO MX and BS11, with ABEMA and d Anime Store simulcasting at the same time. Internationally, Crunchyroll holds global simulcast rights and posts new episodes every Sunday. The source light novels by Rifujin na Magonote, published in Japan by KADOKAWA's MF Books, are available in English from Seven Seas Entertainment, so anyone who wants to read what's in that diary before next Sunday has the option. Full Japanese reactions are collected in the original Anime Anime article.