Honestly... I feel like whether you think Rekki Lune is relateable or inspirational is really up to you.
Going off comments I've had, some people definitely do find Rekki relateable. She's a young adult woman who made some bad choices in her teens; you know, she had a crush on an older guy, and she was young and naive and so overlooked a bunch of red flags, neglected her best friend and ultimately is now stuck with the consequences of all that. She's tired and isolated, and she feels like nothing she does is ever really good enough, and no matter what she tries, she'll always just get criticised. Some people see that and go, "Yes. Mood."
I don't know about "inspirational" but people do admire some of her traits. Rekki has a strong sense of responsibility, and she's always willing to jump in and put her neck on the line for others. She's pretty much allowed herself to be the King's chewtoy with an exhausting and sometimes thankless job, and the target of anger by the very people she's trying to help, just so she can protect the people who are trying to save the country.
I think of Rekki as a person who's trying, but can only succeed if she works together with others who can give her support and offer complementary skillsets or personality types. Some people might find her relateable or even inspirational, while others might resonate more with one of the other characters. Personally, I think I'd like to be friends with her, but I wouldn't want to be her. 