Death Note: The Moon Sets, Dawn Breaks

She was a killer in life. After death, she hoped to live a normal life, but because of her friends, she was still drawn into battle. What should she do about the grudges of the past and the days ahead? The heroine may seem cold, but she's warm-hearted and honest. The male lead will probably be Ukitake, barring any surprises. This story is a slow burn. The heroine is such a blockhead... The first two volumes have [a little foreshadowing], but the [obvious] romance won't emerge until the third volume. That's one seriously slow burn... This story doesn't follow the original plot exactly, and only borrows from it up to the end of the Aizen arc, to lay groundwork for what comes later. TV-original episodes and the movies are selectively ignored. Theme: