Laiko's Links
It's not that Laiko did not accept Kaede. He simply was not familiar with being in such a situation, as he could not really wrap his head around it. He apologizes to Kaede if it came off as harsh and cold. Regardless, Kaede had never done any wrong to Laiko, and he very much appreciates het kindness and concern. Laiko would definitely applogize to Kaede whenever he falls short of something, but surely Kaede wouldn't want him to make up for it at the cost of his health.
Kaede highly values Laiko as a friend, even if he didn't exactly accept Kaede at first. She loves hearing him talk about his brother, because he always looks so happy when he does. Like the others, Kae was quite devastated when he died, and lamented his passing.