Koharu

Meek and timid, she'd always follow behind her brother.
Back then, she was picked on by some brats, but her brother would always come running to her aid. He was the reason she could barely hold back her tears.
When he praised her for not crying, she would regain her spirits.
When she was picked on, when they separated, when they reunited, when the confession happened, she'd always be prone to crying a lot.
Thinking about her brother, her heart would throb while her mind would be in a feverish state.