Man, I've been neck-deep in Bleach lore ever since the 'Thousand-Year Blood War' anime revival got announced, so this question hits close to home! From what I’ve gathered scouring forums and official sites, there’s no confirmed spin-off yet—just a lot of hopeful speculation. Fans are buzzing about potential side stories, like a Kuchiki clan prequel or a Soul Society detective series starring Hisagi. Kubo’s one-shots like 'Burn the Witch' keep the vibe alive, but nothing directly tied to Bleach yet.
That said, the manga’s final arc left so many threads dangling (Ichigo’s kids? The Soul King’s backstory?) that spin-offs feel inevitable. Studio Pierrot might be waiting to gauge the anime’s success before greenlighting anything. Personally, I’d kill for a Rangiku Matsumoto solo adventure—her backstory with Gin was criminally under-explored. Till then, I’ll just re-read the Hell Chapter one-shot and pretend it’s a teaser.