Studio PuYUKAI Anime

The button appeared out of nowhere. There weren't any signs NOT to push it... so the solution is obvious, right? Is it a trap or the start of something new and exciting? The crews of Re:Zero, Overlord, Konosuba, and The Saga of Tanya the Evil will find out when they go from their world to another and get stuck in... class?! See what adorable chaos they'll get up to in this collection of shorts!

(Source: Funimation)

The second season of Isekai Quartet.

Your favorite isekai characters return for more exciting crossovers in our everyday world! This time the Shield Hero s in, and he’s brought Raphtalia and Filo along with him. What kind of shenanigans will the crews of Re:Zero, Overlord, KonoSuba, Saga of Tanya the Evil, and now, The Rising of the Shield Hero get into together?

(Source: Funimation)

The homeroom class gets sucked through a wormhole into - you guessed it! - another world where they encounter a desolate environment dominated by a rampaging magical automaton. There they meet a girl-type golem with mannerisms simllar to Megumin, a woman dressed in the same military uniform as Tanya, and a man with a cane who seems to know Subaru, and hijinks ensue.

(Source: Crunchyroll)

Overlord specials featuring super-deformed characters, bundled with the Blu-ray and DVD volumes of Overlord.

Began airing after episode 5 of Overlord - each episode is available on the official site for a short period afterwards.

(Source: AniList.co)

A spin-off chibi anime of The Eminence in Shadow (Kage no Jitsuryokusha ni Naritakute!)

Bundled with novel series' 11th volume.The new anime will feature the appearance of the Pleiades combat maids, as well as the rest of the Floor Guardians.

(Source: Anime News Network)

The gag comedy manga centers on a bar in Sapporo's North 24th neighborhood, five stations away from the Susukino business district. There, the bar's proprietor, junior proprietor, odd regular customers, and its share of walk-ins recount their strange lives.

(Source: Anime News Network)

The third season of Re:Zero kara Hajimeru Kyuukei Jikan (Break Time)

The fourth wave of parody shorts for Overlord IV airing on AT-X immediately following the main broadcast, later streamed on Kadokawa's official YouTube channel as a limited viewing and also going to be included on the Overlord IV Blu-rays.

Note: Each episode is only available on the channel for a limited time, spanning 2 weeks long from the date.

Super deformed parody shorts of Overlord II streamed on Kadokawa's official YouTube channel.

Super deformed parody shorts of Overlord III streamed on Kadokawa's official YouTube channel.

A collection of comedic shorts featuring characters from Re:Zero kara Hajimeru Isekai Seikatsu. A continuation of Re:Zero kara Hajimeru Break Time.

A manner movie shown before Re:Zero kara Hajimeru Isekai Seikatsu - Hyouketsu no Kizuna.

Subaru Natsuki's sudden arrival in another world brought nothing short of tension and despair—but that does not mean there is no time for a break! The Kingdom of Lugunica is home to an array of interesting tales and lively characters, all waiting to be discovered. As Subaru explores this fantasy world, he learns that it may not be so different from his own.

(Source: MAL Rewrite)

Chibi Revengers depicts the daily lives of the five Mizo middle schoolers and the Tokyo Manji gang , which are not depicted in the main anime.

(Source: Tokyo Revengers official website, translated)

Clementine escapes from almighty Ainz's gaze, and Albedo with the help of Aura, Mare, and a gratuitously large army of poorly-animated CG goblins must track her down, and eliminate anything that stands in her way, Guardian.

When Fuuta comes home tired at night, all he wants to do is spend time with his new cat. All the mysterious habits and mannerisms of house cats are carefully reproduced in this relaxed and cute comedy about living with an adorable furball!

(Source: Yen Press)

The second season of Nights with a Cat (Yoru wa Neko to Issho)