Mano and I have been playing together since we were little, and gradually feelings started to develop between us. By the end of grade 9, I decided to gather the courage to express my feelings, and luckily Mano agreed because she had secretly liked me for a long time but was too afraid to confess. Today is her first birthday since we started our new relationship, so I want to give her a big surprise. After school, I arranged to meet Mano at a nearby hotel and bought a cake to celebrate her birthday. Since it's our first birthday celebration together, I want to make it a memorable experience for Mano. After blowing out the candles, I surprised her by carrying her to the bed, undressing her, and then using my erect penis to have sex with her continuously.