Monday, June 1, 2026

Kaijū Sekai Seifuku Anime Drops New Trailer, Cast & Theme Song Ahead of April 5 Premiere! 🎥🦖

The official website for Kaijū Sekai Seifuku (Monster World Conquest) 🏙️🦕—an anime project by Kotobukiya’s Character Creation Lab—has dropped a full promotional video and key visual! 🎥✨

🔥 New Cast, Theme Song & Premiere Date Announced!

The video introduces two new cast members:
🎙️ Misato Fukuen as Gaogao
🎙️ Megumi Satō as Garugaru

Plus, it reveals the anime’s theme song 🎶: “Gaogaogao” by Rosy Chronicle, a new Hello! Project group! 🎤🎵

📅 When & Where to Watch?

📺 Premiere Date: April 5 at 7:00 a.m. JST (April 4 at 6:00 p.m. EDT)
📡 Channel: TV Tokyo

🎭 Main Cast

🔹 Aoi Yūki as kaijū Mera, Gusuka, Aniki, and Sugar
🔹 Rina Kawaei as the kaijū’s owner
*🔹 Sōta Nakajima as the neighbor

🎬 Creative Team

🎥 Director: Kinuta Ōshiro (DLE)
📝 Scriptwriter: Hiroto Naka

📜 About the Story: A Wholesome Kaijū Takeover?!

This “heartwarming slice-of-life” anime 🏠💖 follows four dragon-like monsters 🐉 who arrive on Earth 🌏 with a mission: WORLD DOMINATION! 🌍🔥

But first… they decide to study humanity 👀 by freeloading off a female office worker (OL) in her 20s! 😆 They turn her apartment into their secret base 🏡🔬 and slowly prepare for their grand conquesteventually. 😅

📖 From Manga to Anime!

🔹 The short anime first debuted on Kotobukiya’s YouTube channel in April 2020.
🔹 A four-panel manga by Hoshinoko ran on Kadokawa’s Comic Newtype from January 2020 to April 2021.

👀 Are you ready for this unique blend of kaijū chaos & cozy slice-of-life vibes? Let us know your thoughts below in the comments! 💬👇

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