Yuusha Party wo Kubi ni Natta node Kokyou ni Kaettara, Member Zenin ga Tsuite Kitan da ga

I'm going to marry everyone and start my harem life. "Jin... our journey together ends here." Jin, who had formed a party with his childhood friend, the Hero Reki, and set out on an adventure to defeat the Demon Lord, was suddenly told goodbye just before their final battle. Devastated, Jin returned to his hometown. However, the party members quickly defeated the Demon Lord and began proposing to Jin one after another—!? "Jin, do you remember the promise we made when we were kids?" "You said you'd marry me, right?" "Jin-san, what should we name our baby?" Unknowingly, Jin had promised to marry three different people and was about to build a polygamous harem! "E-everyone, calm down!" Thus begins the harem x slow-life fantasy!