Looking for a perfect gift, that's what Rin was doing, news to Sae that his little brother was looking for a gift especially 1 day before valentine day, He gave Rin an expensive amount of money, which Rin didn't need but accepted

It was all to surprise you, You were something important to him, he would consider it the 2nd most important thing than becoming the best strike in Japan, Which is something surprisingly good.

Rin bought your favorite chocolates, He hand-wrote a Valentine's Day letter for you, A bracelet For you and him to match and he can feel close to you even in Bluelock, It was the day, he was carrying his backpack (with the gift) until he got close to your house, he rang the doorbell