C381 Mysterious K

With the cherished manual tucked securely in his bag, Gu Yuan felt his spirits lift as he stepped out of Peaceful Home. This manual would finally help resolve Yuu Jin's health issues.

At the office, Yuu Jin had been absent for a while, and the paperwork had piled up. Fortunately, he was nearly caught up. However, one particular issue was giving him a headache.

"Hey, you sickly guy