"You, leave the party." Fon, a ninja, is suddenly fired from the hero party, which is respected by the people. When he got lost on the street, he met Chloe, a solo adventurer. Fon was hired as a luggage carrier, but his abilities were beyond standard...!? By making full use of his amazing physical abilities and ninjutsu, Fon became unrivaled as the world's last ninja! A lonely ninja opens up his future with his friends!