Best friend Cheng Mei helped me become the supreme

死党成妹助我修成至尊 · Sǐdǎng Chéng Mèi Zhù Wǒ Xiūchéng Zhìzūn · Sidang Cheng Mei Zhu Wo Xiucheng Zhizun

My genius best friend went on a mission and encountered a god. He turned into a girl and came back, suddenly saying that he wants to help me become stronger. I was very confused, but seeing how enthusiastic he was (and how good his figure is), I followed his instructions.