To find or read Ore no Wakuchin Dake ga Zombie-shita Sekai wo Sukueru
The series is known for its "guilty pleasure" appeal. While it utilizes the classic zombie apocalypse trope seen in series like Zom 100, it differentiates itself by leaning heavily into adult comedy and the "chosen one" narrative where the protagonist's lifestyle is his greatest weapon.
Chapter 7 of Ore no Wakuchin Dake ga Zombie shita picks up where the previous chapter left off, with Sei and his allies continuing their fight against the zombie hordes. As they navigate through a desolate landscape, they stumble upon a mysterious underground bunker that may hold the key to finding a cure for the zombie virus.
I notice you’re asking for a story based on a specific raw manga chapter link (welovemanga) and a Japanese title that roughly translates to "Only My Vaccine Can Save the Zombie World."