S01E013:011. I Want You to Clean UpI'm a 28-year-old office worker who lives with monsters in Tachikawa. The monsters' names are Mera, Gooska, Aniki, and Sugar. Living together is just fun... but it seems…Episodes — Season 1
Season pageS01E013:011. I Want You to Clean UpI'm a 28-year-old office worker who lives with monsters in Tachikawa. The monsters' names are Mera, Gooska, Aniki, and Sugar. Living together is just fun... but it seems…
S01E023:552. I Want to Go on a DietI started exercising to try and get rid of my weight. The monsters help me out, but it seems like more of a nuisance than a blessing. And then, Sugar finally gets a…
S01E033:053. I Want to Go Outside and PlayOn a nice day, you took the monsters to the park. The monsters were nervous about swinging on the swings for the first time. But you taught them how to ride them... and…
S01E043:584. Ah, I'm grateful
S01E053:205. It's Children's DayIt's Children's Day. The boss made the monsters helmets and swords out of newspapers. The monsters are engrossed in play sword fighting. There is one more thing in the…
S01E063:426. It's Moving SobaOne day, a box of moving soba noodles was left in front of my house. It seems that someone has moved in next door. But they look like some pretty surprising people!
S01E073:567. They are New MonstersIt seems that two monster brothers, GaoGao and Garuga, have moved in next door. Will they be able to get along with the others?
S01E083:258. The House Next Door is LeakingThe Gaogaru brothers live with a businessman a little younger than them. They just moved in, and now their house is leaking... They call for help, a skilled repairman!
S01E093:199. It's a CatThe cat Shisho, the siblings' idol, seems to have learned a lot of things. But he still hasn't mastered bath time. The only way to surpass Shisho is to master bath time.
S01E103:4410. It's the Monsters' SecretMera, Gooska, Aniki and Sugar are not just cute monsters. They each have their own incredible secrets!
S01E113:1011. My First Time Meeting My NeighborThis was your first face-to-face encounter with your neighbor! Since you both live with monsters, you two seemed to hit it off right away. With monsters so close by…
S01E123:2812. My First BookstoreAt the bookstore that you took us to, the monsters seemed to be fascinated by the dinosaur picture book. But then they wondered, "What are dinosaurs?" You had trouble…
S01E133:4613. I Go Out on Rainy DaysMera and her friends go out wearing raincoats on a rainy day. They bump into the Gaogaru brothers and end up going to a candy store. Something unbelievable happens there!
S01E143:4514. I Want to See a Shooting StarIt seems that if you make a wish on a shooting star, it will come true. The monsters and I tried our best not to fall asleep while waiting for the shooting star... but…
S01E153:3915. A Spicy Cheer Me UpIt seems like the guy next door has had a bad day at work. When Master and Mera found out about this, they wanted to somehow encourage him, and Mera came up with a great…
S01E163:3316. Instant Noodle Eel Day
S01E173:2717. The Friends I Met over the SummerMera and her friends go to the park wearing the straw hats that their master bought them. There is a unicorn playground equipment there, and Mera puts her straw hat on…
S01E183:3418. I Tried the Summer FestivalMera and her friends invite the Gaogaru brothers over to their master's house to play a summer festival. Gaogaru has a blast and leaves, but what's the master's reaction…
S01E193:4019. It's Important to Get Up EarlyGusuka really wanted to see the morning glory flowers that bloom early in the morning. Sleepyhead Gusuka tried his best to get up early, but was he able to see the…
S01E203:0720. It's a Delicious Green FeastMy relatives sent me a lot of edamame beans, so I thought I'd share them with my neighbors, but instead they sent me a lot of bitter melon... We'll just have to have a…
S01E213:5721. It's So Hot, I Can't Stand ItBe careful even inside the house on hot days! I prepared a secret weapon for the monsters staying at home alone... I never thought it would turn out like this!!
S01E223:0722. Shaved Ice is the Best!Shaved ice is the best thing on a hot day! I made shaved ice for the monsters, but... My brother, who loves cold food, helped me out!
S01E233:3323. Typhoons are Dangerous!!A typhoon is approaching Tachikawa, where the brothers live! The brothers and the monsters are fully prepared. However, the neighbor says he wants to go to work... Will…
S01E243:3424. Dango is Better Than the Moon?On the fifteenth night of the lunar month, the lord and his brothers, along with their neighbor's brother, each went to watch the moon. The full moon is beautiful, but…
S01E253:3625. Turn into a Monster Eggplant!?A relative sent a lot of eggplants, so she cooked every eggplant dish she could think of and served them to the monsters. But the next morning, the monsters got into…
S01E263:4226. We're the Three Snack-BuyersGaoGao and GaruGaru invite the foodie Sugar to buy some snacks. Then, just as they try to strengthen their bond as friends, something terrible happens!
S01E273:4427. Autumn ArtMera, Gooska, Aniki, and Sugar each completed a piece of work using the master as a model. What kind of creations did they create...?
S01E283:5328. Autumn, the Season for CleaningAutumn is the season for reading, appetite, and sports... they all sound fun. What kind of autumn will it be for GaoGao and GaruGaru?
S01E293:3529. I'm Picking ChestnutsMera and her friends are excited about their first chestnut picking adventure. However, the number of chestnuts they picked doesn't match the number they brought home…
S01E303:5430. Happy HalloweenMera, Gusuka, Aniki and Sugar dress up in strange costumes and go to their neighbor's house. Will GaoGao and GaruGaru give them sweets?
S01E313:3231. The President is SurprisedApparently, the man next door made a mistake at work, and is drinking with GaoGao and GaruGaru at a food stall. Then, to his surprise, the company president shows…
S01E323:4632. Mochasuke is AmazingThe president knows a lot of good things about Mochasuke. Will he be able to get along with Mera, Gusuka, Aniki, Sugar, Gaogao and Garugaru?
S01E333:1633. Episode 33
S01E343:0334. Episode 34
S01E353:0135. Episode 35
S01E363:3536. Episode 36
S01E373:4937. Episode 37
S01E383:0038. Episode 38
S01E393:4239. Episode 39
S01E403:0940. Episode 40S01E413:3941. Episode 41S01E423:1342. Episode 42S01E433:4343. Episode 43S01E443:4444. Episode 44S01E453:3445. Episode 45S01E463:3646. Episode 46S01E473:3447. Episode 47S01E483:3948. Episode 48S01E493:0949. Episode 49S01E503:0450. Episode 50Where to stream Kaijuu Sekai Seifuku
No streaming offer listed in the United States yet.
Availability provided by JustWatch via TMDB. Offers in the United States, subject to change.
Kaijuu Sekai Seifuku synopsis
Following the chaotic and heartwarming daily lives of Kaijuu who have come to Earth to conquer the world and live with their human masters.
Kaijuu Sekai Seifuku cast
About the series Kaijuu Sekai Seifuku
Kaijuu Sekai Seifuku is a series (animation), airing on TV Tokyo since 2025. It has 1 season and 50 episodes of about 3 minutes each. The series ended on March 21, 2026. Cast members include Aoi Yuuki, Rina Kawaei and Sota Nakajima. It is rated 8.0/10 by 1 TMDB users.
Frequently asked questions about Kaijuu Sekai Seifuku
Where to watch Kaijuu Sekai Seifuku online?
No legal streaming offer is listed in the United States for Kaijuu Sekai Seifuku yet (source: JustWatch via TMDB). Each episode has its own page with this information.
How many seasons of Kaijuu Sekai Seifuku are there?
Kaijuu Sekai Seifuku has 1 season for a total of 50 episodes.
Has Kaijuu Sekai Seifuku ended?
Yes, the series has ended: the last episode aired on March 21, 2026.
Who stars in Kaijuu Sekai Seifuku?
The lead actors are Aoi Yuuki (Mera / Gusuka / Aniki / Sugar / Narrator (voice)), Rina Kawaei (Owner (voice)), Sota Nakajima (Neighbor's Owner (voice)), Misato Fukuen (Gaogao (voice)), Megumi Satou (Garugaru (voice)).
