That Time I Got Reincarnated as a Slime Season 3 Episode 20: Nation's Opening Festival

This episode marks the official start of Tempest's long-awaited Founding Festival. After many chapters of planning, diplomacy, and preparation, we finally see visitors from various nations arrive to participate in one of the most important events in Tempest's history.

The best: The reward for all the preparation. The episode conveys the feeling that all the effort of Rimuru and his allies is finally bearing fruit.

Excellent world-building. We see how leaders, merchants, adventurers, and tourists react to Tempest's growth.

A very well-achieved festive atmosphere. The episode has a different energy than usual, with celebrations, performances, and general enthusiasm.

Tempest's development as an international power. It is no longer just a nation of monsters, but a major player on the world stage.

The worst: Very little action. The focus is entirely on the festival and the relationships between characters.

A slow pace. It's an introductory episode to the events that will follow.

More celebration than conflict. Some viewers may miss a significant threat or tension. My opinion

This episode serves as a grand celebration of Tempest's growth since the beginning of the series. Seeing characters from different countries gathered to enjoy the festival demonstrates the extent to which Rimuru has changed the world around him. While not an action-packed episode, it's very satisfying for those who have followed the nation's development throughout the story.

Final verdict: A joyful and very enjoyable episode that showcases Tempest's success and sets the stage for the events of the rest of the festival. 8.5/10.