Honestly, I want to say as little as possible because I don't want to spoil anything, and I think this is a story genuinely worth experiencing on your own.
It's hard to parse my feelings about this one. The art direction is extremely evocative and conveys all the necessary emotions to the reader through its simplicity. I'm sure everyone's already mentioned it, but the sun breaking through the paper background was so genius, my jaw hit the floor. More than that, I immediately resonated with the isolation and loneliness that the wolf had felt, based solely on the black and white paper visuals you'd used during The Wolf and the Sun story; excellent work. I liked the writing style, but sometimes it felt very difficult to understand what was being said or the underlying meaning- I needed to reread a couple lines, before the lightbulb went off in my head, but some of that was probably just me being stupid.
My favorite part, by far, was Lucas' undying hope, even when face-to-face with devastation. Even then, he believed that the wolf would eventually find his footing without him by his side, and something about that felt very... I'm not sure, uplifting? Inspiring. Truly, he was the sun.