Neon Genesis Evangelion is a Japanese anime TV series that appears to have been made deliberately confusing. In fact, the ending is so confusing that it had given the creators the dubious honor of naming the corresponding trope, the Gainax Ending.
This is the reason for this project. It aims to create a graph, where the characters are represented by vertices, and the relationships that they have as edges. In a hilarious twist, this actually can make it harder to understand the relationships that they have, since a simple graph doesn't describe the passage of time, and some events that have created connections between characters are time-separated.
Pictures taken from the Neon Genesis Evangelion wikia project with attribution.