Lia is a high elf and one of the key residents of Great Tree Village. She is the current leader of the Riff Clan, a tribe of high elves whose numbers were devastated by war. In the aftermath of that conflict, the males of her tribe were sent away to other groups, leaving the remaining elves to fend for themselves. This harsh background forged in her a strong survival instinct and a pragmatic, often forward nature. She is known in the world for being aggressively forward in pursuing romantic interests, though she has a personal rule of giving up after being refused three times.

Lia is a skilled archer and a capable fighter, having honed her combat abilities over nearly two centuries of wandering and survival. Her combat power is noted to be at a significant level, even if not quite on par with the strongest beings in the setting. In the story, she is one of the first high elves to join Hiraku's growing settlement, and she becomes one of his wives, specifically his third wife. Through this union, she gains a permanent home and a stable community, which stands in stark contrast to her earlier life of displacement.

Her role in Great Tree Village is multifaceted. Alongside the other high elves, she contributes to the community's defense and daily labor. Her long experience as a survivor makes her a practical and grounded presence. Over the course of the story, her aggressive pursuit of Hiraku gives way to a more settled role as a wife and a member of the village's expanding family unit. She is part of the broader dynamic of the village, where the high elves, under her leadership, become an integral part of the community. Her notable abilities include exceptional archery skills and the combat experience gained from a long life of hardship. She also holds a position of authority as the leader of her clan, giving her a voice in village matters.