Yuuki Eichiro represents the Strength arcana, and is a second year.

Yuuki is Makoto's brother, and a tired individual. Him and Makoto live together and he supports the both of them, entirely out of his own decision to let Makoto focus on school, while he juggled work and school at the same time. He's a bit over-protective, a major worry wart, kind but strong willed, and defensive. His sister means the world to him even if he doesn't fully understand her situation, but he wants to give her the basic ease of life he thinks she should have. He's usually soft spoken, with a somewhat airy sound to his voice, but ultimately he's just someone who sounds like a guy. He doesn't consider himself special, he keeps close to the small number of friends he has, and focuses on his future. He worries about being able to keep the life Makoto and him have together as he gets older, but has to focus on where he is for the moment.  Maybe standoffish at first, Yuuki is the type who'll come through for you in the end.

Yuuki is relatively typical; not outwardly friendly, but not rude. He's as polite as he needs to be until he can understand if someone can really be trusted.

Yuuki will later have a shadow who will feature briefly in the story.