Saijaku Tamer wa Gomi Hiroi no Tabi wo Hajimemashita.

Ivy is born into a world that measures people's abilities by star rankings, yet her taming skill has none at all. Treated by her village as a bad omen, she is forced to flee while still a child and survives by collecting what other people throw away.

During her journey, Ivy encounters a tiny, fragile slime that ordinary tamers would consider worthless. She names it Sora and succeeds in forming a bond with it. Rather than chasing powerful monsters, Ivy relies on caution, scavenging, and slowly learning which people can be trusted. The world that labeled her useless begins to look different as she discovers that weakness is not the same as having no value, and that discarded things may be exactly what keeps her alive.