Planned Release Date: 2026

About This Game

Your 100 Days with Seto Begin.

One evening, you discover a young beastfolk named Seto collapsed near your home.

When he awakens, he tells you that he was defeated by another version of himself and vows to challenge him again in 100 days.

Spend the next 100 days together, helping Seto prepare for the battle that awaits.

Raise Seto

Choose how Seto spends each day and guide his growth.

• Train to increase his abilities

• Rest to recover his condition

• Explore new areas

• Learn powerful new skills

How you raise Seto is entirely up to you.

Your choices will greatly influence his growth and fighting style.

Seto's Personality Changes

Seto has two distinct personalities:

Wild and Cool.

Your decisions and training shape his personality, changing his dialogue, reactions, and even the atmosphere of events.

The same 100 days can become a completely different experience depending on how you raise him.

Spend Time with Seto

As the days pass, Seto reveals many different sides of himself.

Talk to him, pet him, or even play rock-paper-scissors together.

These small everyday moments make your 100 days together truly special.

Explore Every Seven Days

Once every seven days, Seto sets out on an expedition.

During exploration, you'll encounter enemies, story events, and challenges that put your training to the test.

Use the abilities you've developed and the skills you've learned to overcome every obstacle.

A Fully Voiced Story

Every conversation and event with Seto is fully voiced in Japanese.

Experience his emotions and personal growth as you spend 100 unforgettable days together.

What Awaits After 100 Days?

The story reaches different endings depending on how you spend your time and how you raise Seto.

The 100 days you share with him will become an unforgettable adventure.

Features

• Raise Seto over the course of 100 days in a character raising adventure.

• Freely develop Seto through Training, Rest, and Exploration.

• Shape Seto's personality between Wild and Cool.

• Create your own combat style by combining different skills.

• Enjoy everyday interactions through the companion system.

• A fully voiced story featuring Japanese voice acting.

• Events and multiple endings that change based on your choices.