Setting: Fantasy world.
The capital town is host to the biggest adventurer's guild in all of the land. In this place, many species are allowed to join groups who work under it, even monsters who are more able to reside in and work with such a foreign place. Among all of these, a young woman has recently joined, seeking fortune and fame.
Though she is quite sure of herself and confident, she is still to group up with someone. This group being one consisting of rather large and capable adventurers. Definitely someone who by far outclasses her in terms of height and size. They were also looking for another addition as well, to add to their range of skills and knowledge. She teams up with them on their missions and such, while also bonding with them in many different ways.
This will be slice-of-life combined with fun fantasy adventures together.
Members in the group before she joins: 2-4.
Possible references for the young shortstack: