Dakara Katte ni Yuusha toka Haou ni Nintei sun no Yamero yo! Elf-zoku mo Kokuou-sama mo Hirefusu hodo Ore wa Idai na Yakuwari Rashii

Seiji is an adventurer who decides to return to his hometown after being dumped by a woman. On his way home, he saves two beautiful elves who have collapsed on the roadside, and as a result, he is celebrated by the hero without permission!? The days of hardship begin for Seiji, who has been certified as the overlord!

(Source: Bushiroad, translated)