Kei and I had the same assumptions. I thought Yuki was in love with the Niisan. I think Yuki was just "chasing" after the Niisan achievements-wise. He sees his Niisan as a rival and nothing more. Kei misread everything and hurt Yuki, who, was PROBABLY already in love with Kei since then hence why he couldn't forget about him, or is trying to at least.
Kei and I had the same assumptions. I thought Yuki was in love with the Niisan. I think Yuki was just "chasing" after the Niisan achievements-wise. He sees his Niisan as a rival and nothing more. Kei misread everything and hurt Yuki, who, was PROBABLY already in love with Kei since then hence why he couldn't forget about him, or is trying to at least.