While chatting with Reicheru one late night, Hiiragi remembered a time when he did something that only a fool would have done for his love one.

Many years ago, when Hiiragi was still in his mid teens, he fell in love with Saiai. She was a cute petite girl from his class. He had been fond of her for many years, but was rejected during the first year when they met. Since then, they have became close friends. But this did not stop hiiragi from loving Saiai, the only difference was, Hiiragi only shown his love towards her indirectly. Whenever Saiai was upset or depressed, Hiiragi would be there by her side, comforting her and cheering her up. And whenever she needed help, he would try his best to help her.
Hiiragi continued his love for Saiai through the years without her knowing. He was not hoping that Saiai would accept him. He just wanted to see her happy. All those years, Hiiragi kept his feelings for Saiai deep in him. Once in a while, the urge of telling her all those feelings would rise. But the thought of risking this friendship with her, always, stopped him. Hiiragi did not want to lose her.
One day, Hiiragi came to know about Saiai's liking for one of the guys in their group, Raian. Since then, Saiai would always mention Raian within conversations with Hiiragi. Hiiragi then started to be closer friends with Raian, in hoping to find out more about him. That was when he found out that Raian was also fond of Saiai. But he also found out that Raian wasn't the kind that would say it out up front nor make the first move. Neither was Saiai. Knowing this and knowing that Saiai would be happy to be with the one who she liked, Hiiragi made up his mind to do something which he would hurt himself in return for her happiness. Hiiragi decided to get Raian to woo Saiai.
He started spending lots of time conveying how Saiai felt for him to him as well as conveying how much Raian liked her to her. Hiiragi also started to teach Raian of ways to win Saiai's heart, ways that he wanted to use. He was loving Saiai through Raian. Every happy moments they had together was hurtful to him. But he continued. He just wanted Saiai to be happy. Soon came valentine and this was also the day Hiiragi told Raian to ask Saiai to be his. Hiiragi totally had it planned out for them, the way he would want to spend his valentine with Saiai. From the gift to the packaging to the place to bring Saiai to for the day was suggested by Hiiragi, as he knows that those were things Saiai would have wanted. The day went on perfectly for both Raian and Saiai. Hiiragi spent that valentine alone. He was happy for Saiai as he knows she would be enjoying herself for the day. And that happiness was enough to cover the pain he went through.
Hiiragi decided that he should move on. As continuing being close to her may complicate things. But at the same time, he wanted to let Saiai know the reason why. He wrote her a letter, filled with his feelings for her but also, telling her that he will be leaving, and that it would be the best for the both of them. He sealed the rolled-up letter with a ring that he always wore, put it into his bag and cycled to her place. The skies were dark and wind was blowing as he cycled. Then it began to drizzle. As little drops of rain hits Hiiragi's face, tears began to roll down his cheeks. He arrived at Saiai's place, dropped the letter into her letterbox and went off. It was raining heavily by then, and Hiiragi was also crying by then, cycling, and crying, in the rain.