Kallen Kaslana is a young Valkyrie and a high school student known for her bravery and strong sense of justice. She fights to protect humanity from the Honkai threats while balancing her school life. Kallen is deeply loyal to her friends and will go to great lengths to ensure their safety. With a strong determination and a fighting spirit, she often puts herself in danger to save others. Despite her serious demeanor in battle, she has a caring side and cherishes her friendships. Her journey involves overcoming challenges while discovering her own strengths and the importance of camaraderie.