Pastel is an orphaned girl, noted as 16 in some sources and 18 in others, living with a group of adventurers. She possesses yellow or blonde hair and ochre eyes. Her occupations encompass adventurer, mapper, and poet, with the specific duty of recording the party's quests and experiences.

She exhibits extraordinary intelligence and honesty, earning her the group's respect. Pastel maintains a bright, friendly demeanor and persistent optimism, despite the party's chronic financial difficulties. These monetary struggles force them to accept menial tasks and part-time jobs to pay off debts, as they cannot afford standard adventure modules.

The core adventuring party includes Pastel alongside Clay the warrior, Trapp the thief, Rumy the infant sorcerer or elf, Kitton the learner, Knoll the giant, and Shiro the white dragon companion. Pastel acknowledges their low experience level but remains committed to improving their situation. Her journey begins with a seemingly straightforward assignment to fetch holy water, which unexpectedly escalates into conflicts involving world-threatening dangers and a confrontation with a white dragon.