Tsuzuki Asato is an energetic, purple-eyed Shinigami played by Maggie. He hails from Descendants of Darkness (Japanese title: Yami no Matsuei), an anime from the mid-90s composed of gay and angst. And gay angst. He is 96 years old, and Maggie is very fond of him.
Quick note: Japanese names are "backwards" to us Westerners. Tsuzuki's first name is Asato, while his family name is Tsuzuki. No one ever calls him Asato.
Appearance
Like many anime characters, Tsuzuki looks nothing like an Asian man. (But he is! Oh, the confusing morass of funny hair colors and unnatural eye hues that is anime.) He has dark brown, messy hair, purple eyes, and is nearly perpetually dressed "for work"- a rumpled white dress shirt, black slacks, and a tie that is more often than not loose or untied. The tie color? Usually black. His ironically forboding and ankle-length trench? Black.
Tsuzuki thinks black is stylish.
It's often pointed out in the anime and manga that Tsuzuki is extremely attractive, probably to note the irony in that he himself doesn't notice or wouldn't think so. His is an almost feminine beauty, as Sylar notes, more beautiful than handsome, but he has a man's build, with broad shoulders and long legs. He's about 5'10 or 5'11, and looks to be in his mid-twenties.
Personality
Backstory
Life as a Shingami
Descendants of Darkness takes a slightly more flexible view of the roles of Shinigami, or gods of death. Tsuzuki is one of a couple of dozen of Shinigami who work in the Summons division of the Judgement Bureau in the Meifu (the Japanese Underworld). The Judgement Bureau judges souls after death; the Summons division is in chanrge of retrieving those souls who, for some reason or another, don't come the Meifu after death. This sounds relatively simple, but this involves investigating strange murders, dealing with stubborn and dangerous ghosts, the occasional demon possession, and plenty of detective work. All Shinigami work in partners, and are by most accounts immortal. They're able to heal rapidly, survive extreme conditions, "fly," cross between worlds, and can change their physical bodies into a state more like a ghost, which makes them invisible to humans unless they're close to death or very spiritually aware. It also lets Shinigami walk through walls. This is neato but probably pretty unpleasant to watch. If they're powerful enough, Shinigami can also control Shikigami, which are a type of powerful spirits that can be summoned for protection or attack, and many learn ofuda spell slips to help on their cases. Some Shinigami have previous abilities from life or develop powers unique to the individual, such as telepathy or the ability to control shadows.
So. Technically, Tsuzuki is dead, and has been for the past 70 years. He is the senior partner in charge of the region of Kyushu, and all the missing souls or cases in that area fall to him to investigate. He is the most powerful Shinigami in his sector, and has been there the longest but for the Chief, but has an even stronger reputation as a slacker and incompetent. He has never been able to hang onto a partner for more than a few months, skips out on work frequently in favor of visiting the human world, detests paperwork, and is horrible with money. And, after 70 years, he's never been promoted; it's rumored that this is because the King of Hades has a grudge against him.
Right now his partner is Hisoka, a boy who died at 16 after 3 years of long, painful sickness. So far, Hisoka has lasted longer with Tsuzuki than anyone else; Tsuzuki is rather devoted to him.
Life as a mortal
Tsuzuki died at 26. For the last 8 years of his mortal life he was a patient in a mental hospital, living the entire time in a coma-like state without food, water, or sleep. Occasionally he would rouse himself for brief periods of lucidity, although in his later years this was nearly always to make an attempt at committing suicide. However, his body kept healing itself before he could die, and it wasn't until he cut his wrists over and over again, until the cuts got infected and wouldn't close, and the bone lay bare, that he finally bled out. Tsuzuki doesn't remember much of his time in the hospital now, although he avoids the subject religiously and makes the occasional comment to himself that suggests he remembers more than he'd like to. He does say that in those years he was hopelessly insane, and the idea that he was less than human even when he was alive- able to heal himself, his unnatural eye color, sustaining without food or water- is another subject that unsettles him deeply.
It's shown that Tsuzuki was ostracized and singled out for bullying when he was young by other children his age, and that he never knew his parents; he was raised by his older sister, Ruka, whom he adored and still talks of lovingly. She taught him to garden, which he does very well, to dance, which he is reasonably good at, and to cook, at which he fails horribly.
Although never stated outright, Tsuzuki seems to have commited some grevious sin as a mortal which propelled him into the mental hospital and now makes King Enma intent on punishing him. There are hints that he accidentally killed a lot of people, and probably his older sister as well.