Voice Actor Yûki Kaji Plays Four Roles in Earth Corporation’s Free Browser Romance Sim ‘Gokigen Lovely Days’

Popular voice actor Kaji Yûki performs all four leading roles in a new romantic simulation game by Earth Corporation, titled Gokigen Lovely Days (also called Gokirabu). The free browser-based game launched on June 4, 2026, via a dedicated website, and a special social media campaign is underway on Earth Corporation’s official X (formerly Twitter) account.

Key visual for Gokigen Lovely Days

Developed to promote the company’s insect-care product line on June 4 — designated as “Bug Care Products Day” by Earth Corporation — the game introduces players to four handsome characters who behave based on real insect habits and ecology. As a romance simulation, the game’s unique system adjusts affection levels according to these insect-inspired actions. Through the game, Earth Corporation aims to raise awareness about summer insect care.

The highlight is Kaji Yûki — known for roles such as Eren Yeager in Attack on Titan, Jet-senpai in Meitantei PreCure!, and Mao in MAO — voicing all four distinct love interests: a prince-like type, a younger-brother type, a refined gentleman, and a wild type. He brings each personality to life with his powerful acting.

Kuro (CV: Kaji Yûki) in Gokigen Lovely Days

Yamato (CV: Kaji Yûki) in Gokigen Lovely Days

These characters also hide a secret tied to Earth Corporation’s product expertise. Players are encouraged to pay attention to each character’s likes and dislikes while enjoying an unpredictable and thrilling love story.

Chaba (CV: Kaji Yûki) in Gokigen Lovely Days

Wamon (CV: Kaji Yûki) in Gokigen Lovely Days

Kaji commented, “When I first heard about this project, I was shocked that Earth Corporation would make a romance game! This is probably my first time playing four different ‘creatures’ by myself. I analyzed each character carefully to bring out their individuality. Experience a thrilling romance from many angles, something only Earth Corporation could offer. Please put on headphones and give it a try!”

In addition, the official website, Earth Corporation’s X account, and YouTube are hosting a promotional movie that condenses the world of the game. The video lets viewers enjoy the voices of Kaji’s four characters and the thrilling atmosphere before diving into the game itself.

“#BugCareProductsDay2026” campaign

The game’s prologue story, posted on the official site, also hides a special gimmick — players are advised to read it aloud. Meanwhile, a giveaway on Earth Corporation’s official X offers original Gokigen Lovely Days goods and an autograph shikishi board signed by Kaji Yûki.

Gokigen Lovely Days game screen

Gokigen Lovely Days game screen

Game Overview

Release: June 4, 2026 (Thursday) – September 3, 2026 (Thursday)

Platform: Browser game (smartphone & PC compatible / completely free)

“#BugCareProductsDay2026” Campaign Details

Entry period: June 4, 2026 (Thursday) – June 17, 2026 (Wednesday)

Prizes & Entry Methods

Insect-care products & original goods (64 winners total)

• Prizes: Earth Gokish Su, Sugoi! 60 pushes / Gokijet Pro 450mL / Black Cap for outdoor use 8-pack / Gokigen Lovely Days original acrylic stand
• How to enter:
  1. Follow Earth Corporation’s official X account.
  2. Repost the designated campaign post (quote reposts are not eligible).
  3. Winners will be contacted via DM from the same account.

Double chance: Kaji Yûki autograph shikishi (10 winners total)

• Prize: Kaji Yûki autograph shikishi
• How to enter:
  1. Follow Earth Corporation’s official X account.
  2. Reply to the campaign post or post a quote repost with your impressions after playing the game.
  3. Winners will be contacted via DM from the same account.

Written by Nakase Koutarou