You never lied when you said you wanted to be friends.
After Five explains what happened, Nino promising to take Five home to the lab and reunite her with her friends.
Although it's just a memory, and it's somewhat enigmatic, Nino's garden flashback triggered by flowers looks rather beautiful. Immediately after this, Five is scared from Nino inexplicably zoning out for a while. Nino gives her a flower crown to calm her down, which results in the hug which provides the page image.
And him continuing to do so, even after it'd mean fighting Corona
It's small, but when one suggestion proposes that Corona go after Five and Ludwig, she says that Five isn't necessary since monsters aren't her enemy, and as for Ludwig, is disgusted by the idea of hurting a dog.
When Nino tries to talk about himself to the winged cat, he realizes he doesn't remember why he went on his adventure in the first place, but still feels guilty for not accomplishing it. He admits his fears to the cat, which promptly decides to cheer him up by licking his face.