Kaijuu Sekai Seifuku poster
    TV Series

    Kaijuu Sekai Seifuku

    8/10
    2025 - 2026
    3m/ep
    Ended
    Seasons: 1
    Episodes: 50

    Following the chaotic and heartwarming daily lives of Kaijuu who have come to Earth to conquer the world and live with their human masters.

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    Seasons & Episodes

    I Want You to Clean Up

    1. I Want You to Clean Up

    I'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 that's not all that great.

    4/5/20253 min
    I Want to Go on a Diet

    2. I Want to Go on a Diet

    I 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 great skill... but how?!

    4/12/20253 min
    I Want to Go Outside and Play

    3. I Want to Go Outside and Play

    On 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 they had a lot of fun!

    4/19/20253 min
    Ah, I'm grateful

    4. Ah, I'm grateful

    No description available.

    4/26/20253 min
    It's Children's Day

    5. It's Children's Day

    It'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 sky that makes the monsters happy...

    5/3/20253 min
    It's Moving Soba

    6. It's Moving Soba

    One 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!

    5/10/20253 min
    They are New Monsters

    7. They are New Monsters

    It seems that two monster brothers, GaoGao and Garuga, have moved in next door. Will they be able to get along with the others?

    5/17/20253 min
    The House Next Door is Leaking

    8. The House Next Door is Leaking

    The 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!

    5/24/20253 min
    It's a Cat

    9. It's a Cat

    The 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.

    5/31/20253 min
    It's the Monsters' Secret

    10. It's the Monsters' Secret

    Mera, Gooska, Aniki and Sugar are not just cute monsters. They each have their own incredible secrets!

    6/7/20253 min
    My First Time Meeting My Neighbor

    11. My First Time Meeting My Neighbor

    This 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, could there be more out there...?!

    6/14/20253 min
    My First Bookstore

    12. My First Bookstore

    At 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 explaining it...

    6/21/20253 min
    I Go Out on Rainy Days

    13. I Go Out on Rainy Days

    Mera 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!

    6/28/20253 min
    I Want to See a Shooting Star

    14. I Want to See a Shooting Star

    It 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 did everyone's wishes come true?

    7/5/20253 min
    A Spicy Cheer Me Up

    15. A Spicy Cheer Me Up

    It 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 idea... but is that really true!?

    7/12/20253 min
    Instant Noodle Eel Day

    16. Instant Noodle Eel Day

    No description available.

    7/19/20253 min
    The Friends I Met over the Summer

    17. The Friends I Met over the Summer

    Mera 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 the unicorn. That night, something surprising happens!

    7/26/20253 min
    I Tried the Summer Festival

    18. I Tried the Summer Festival

    Mera 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 next door?

    8/2/20253 min
    It's Important to Get Up Early

    19. It's Important to Get Up Early

    Gusuka 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 morning glories?

    8/9/20253 min
    It's a Delicious Green Feast

    20. It's a Delicious Green Feast

    My 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 party!

    8/16/20253 min
    It's So Hot, I Can't Stand It

    21. It's So Hot, I Can't Stand It

    Be 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!!

    8/23/20253 min
    Shaved Ice is the Best!

    22. 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!

    8/30/20253 min
    Typhoons are Dangerous!!

    23. 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 the brothers be able to stop him with their trump card?

    9/6/20253 min
    Dango is Better Than the Moon?

    24. 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 what are the monsters looking for...?

    9/13/20253 min
    Turn into a Monster Eggplant!?

    25. 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 some trouble!

    9/20/20253 min
    We're the Three Snack-Buyers

    26. We're the Three Snack-Buyers

    GaoGao and GaruGaru invite the foodie Sugar to buy some snacks. Then, just as they try to strengthen their bond as friends, something terrible happens!

    9/27/20253 min
    Autumn Art

    27. Autumn Art

    Mera, Gooska, Aniki, and Sugar each completed a piece of work using the master as a model. What kind of creations did they create...?

    10/4/20253 min
    Autumn, the Season for Cleaning

    28. Autumn, the Season for Cleaning

    Autumn is the season for reading, appetite, and sports... they all sound fun. What kind of autumn will it be for GaoGao and GaruGaru?

    10/11/20253 min
    I'm Picking Chestnuts

    29. I'm Picking Chestnuts

    Mera 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. What could have happened?

    10/18/20253 min
    Happy Halloween

    30. Happy Halloween

    Mera, Gusuka, Aniki and Sugar dress up in strange costumes and go to their neighbor's house. Will GaoGao and GaruGaru give them sweets?

    10/25/20253 min
    The President is Surprised

    31. The President is Surprised

    Apparently, 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 up...and a shocking secret is revealed!

    11/1/20253 min
    Mochasuke is Amazing

    32. Mochasuke is Amazing

    The president knows a lot of good things about Mochasuke. Will he be able to get along with Mera, Gusuka, Aniki, Sugar, Gaogao and Garugaru?

    11/8/20253 min
    Episode 33

    33. Episode 33

    No description available.

    11/15/20253 min
    Episode 34

    34. Episode 34

    No description available.

    11/22/20253 min
    Episode 35

    35. Episode 35

    No description available.

    11/29/20253 min
    Episode 36

    36. Episode 36

    No description available.

    12/6/20253 min
    Episode 37

    37. Episode 37

    No description available.

    12/13/20253 min
    Episode 38

    38. Episode 38

    No description available.

    12/20/20253 min
    Episode 39

    39. Episode 39

    No description available.

    12/27/20253 min
    Episode 40

    40. Episode 40

    No description available.

    1/10/20263 min

    41. Episode 41

    No description available.

    1/17/20263 min

    42. Episode 42

    No description available.

    1/24/20263 min

    43. Episode 43

    No description available.

    1/31/20263 min

    44. Episode 44

    No description available.

    2/7/20263 min

    45. Episode 45

    No description available.

    2/14/20263 min

    46. Episode 46

    No description available.

    2/21/20263 min

    47. Episode 47

    No description available.

    2/28/20263 min

    48. Episode 48

    No description available.

    3/7/20263 min

    49. Episode 49

    No description available.

    3/14/20263 min

    50. Episode 50

    No description available.

    3/21/20263 min

    Cast