Yu Ominae  

, 御神苗優

A Spriggan agent hailing from Japan serves as the main character in both the manga and OVA series. Despite being quite young, he is an accomplished martial artist, skilled in firearms and commando tactics due to his extensive training with COSMOS and ARCAM. Although Yu tends to be a bit of a slacker at heart, he often finds himself getting into trouble with some of his teachers because he doesn't pay attention during certain classes. This leads to teasing from his peers who suspect that Yu enjoys avoiding school in order to carry out secret Spriggan missions before graduating high school. However, despite the challenges of balancing his high school life with his duties as a Spriggan agent, Yu remains committed to his role and is proud of where he comes from.