As Eureka Everica progresses through a key character arc, the series' character relationship diagram has been updated.
The update reflects developments involving protagonist Kihachi, who has realized the invention of the denki mokuroku—a crucial achievement in the pursuit of his brother's shared dream: establishing the 20th century as an age of electricity. With this milestone reached, Kihachi has renewed his forward momentum.
The updated diagram provides viewers with an overview of where major character relationships and story threads stand following these recent developments.
AniHeat's take: Relevant for viewers tracking the ongoing narrative; the diagram update comes after a significant milestone in the protagonist's central quest.
Announced 7/27. Source: Official X (@denkimokuroku)