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Sometimes gods have only one parent. For example, Amateras was born from Izanaki's eye.
There are numerous generations between Susanoh and Ohkuninushi but Ohkuninushi was visiting him because they're immortal.
Each god has a lot of brothers, sisters, and children which are not shown here.
-Hime or -bime mean 'princess' in Japanese.
It is said that Jinmu is the first Japanese emperor.
Pantheon?
Amaterasu
The Japanese Shinto sun goddess, ruler of the Plain of Heaven, whose name means 'shining heaven' or 'she who shines in the heavens'. She is the central figure in the Shinto pantheon and the Japanese Imperial family claims descent from her 1. She is the eldest daughter of Izanagi. She was so bright and radiant that her parents sent her up the Celestial Ladder to heaven, where she has ruled ever since.
When her brother, the storm-god Susanowo, ravaged the earth she retreated to a cave because he was so noisy. She closed the cave with a large boulder. Her disappearance deprived the world of light and life. Demons ruled the earth. The other gods used everything in their power to lure her out, but to no avail. Finally it was Uzume who succeeded. The laughter of the gods when they watched her comical and obscene dances aroused Amaterasu's curiosity. When she emerged from her cave a streak of light escaped (a streak nowadays people call dawn). The goddess then saw her own brilliant reflection in a mirror which Uzume had hung in a nearby tree. When she drew closer for a better look, the gods grabbed her and pulled her out of the cave. She returned to the sky, and brought light back into the world.
Later, she created rice fields, called inada, where she cultivated rice. She also invented the art of weaving with the loom and taught the people how to cultivate wheat and silkworms.
Amaterasu's main sanctuary is Ise-Jingue situated on Ise, on the island of Honshu. This temple is pulled down every twenty years and then rebuild in its original form. In the inner sanctum she is represented by a mirror (her body). She is also called Omikami ("illustrious goddess") and Tensho Daijan (in Sino-Japanese pronunciation).
Ame-No-Oshido-Mimi
The son of the goddess Amaterasu. He refused to become the ruler of the earth, when offered this position.
Izanagi
In Japanese Shinto-mythology, the primordial sky, the god of all that is light and heavenly. Izanagi ("the male who invites") and his wife and sister Izanami ("the female who invites") were given the task of creating the world. Standing on Ama-no-ukihashi (the floating bridge of the heavens), they plunged a jewel crested spear into the ocean. When they pulled it free, the water that dripped from the spear coagulated and formed the first island of the Japanese archipelago. Here the first gods and humans were born.
When his wife died giving birth, Izanagi went to the underworld to retrieve her, but she refused to come back with him and they parted forever. When Iganami returned from the underworld, he started the first cleaning rites. He washed his left eye and thus created the sun goddess Amaterasu. When he washed his right eye, the moon goddess Tsuki-Yumi came forth. From his nose he created Susanowo, the god of the seas and the storms.
Izanami
In Japanese Shinto-mythology, a primordial goddess and personification of the Earth and darkness. Izanami ("the female who invites") is the wife and sister of Izanagi. Together they created Onogoro, the first island of the Japanese archipelago. She died gaving birth to the fire god Kagutsuchi and since then she rules over the underworld.
Her husband went there to take her back with him, but she refused. By sealing the entrance to the underworld she tried to imprison him, but Izanagi managed to escape. Furious, Izanami vowed to kill one thousand of Izanagi's subjects a day, and Izanagi vowed to create fifteen hundred new ones a day.
Owatatsumi
The Japanese god of the sea. 
Oyamatsumi
A Japanese mountain god.
Ko-no-Hana
The Japanese Blossom Princess ("child-flower"), the symbol of delicate earthly life. She makes the flowers blossom. She is the daughter of the mountain god Oho-Yama, and is the wife of Ninigi. She met him on the seashore and they fell in love. Ninigi asked Oho-Yama for his daughter's hand, but the mountain god proposed that he should marry his elder daughter Iha-Naga ("princess live-long") instead. Ninigi choose Ko-no-Hana and the lived happily together and had three sons, including Hoderi and Hoori.
Their marriage, however, was not a happy one. Because of her husbands unreasonable jealousy Ko-no-Hana retired to a hut in the woods. The hut she later set on fire and she perished in the flames.
Ninigi-no-mikoto
Prince-Ear-of Rice and Plenty; the rice-god, ancestral god the Japanese imperial family. He is a grandson of the sun goddess Amaterasu and her husband Takami-Musubi. His mother sent him to the earth take charge of the general and political affairs.
Accompanied by his sister, the vivacious Uzume, he descended to earth and arrived at the point where eight paths lead in all directions of the compass. They he met the terrible deity who guards the Floating Bridge to Heaven, who frightened him but not Uzume. Therefore, the god of the paths guided Ninigi to all the regions of his terrestrial kingdom. Out of gratitude, Ninigi give his sister in marriage to him. He himself married Ko-no-Hana.
Later, Ninigi and his descendants fought their way from southern Japan to the Jamato plain (east of Osaka) and there they founded the imperial dynasty of Jamato. Amaterasu gave him a mirror, a jewel, and a sword (which are still the imperial symbols of sovereignty in Japan).
Susanowa
The Japanese Shinto god of the winds, the storms, and the ocean, also the god of snakes. He was born from the nose of Izanagi, and was given dominion over the seas. His sister, the sun goddess Amaterasu, is also his consort. Susanowa (Susanoto) is the personification of evil, but also a brave, if lawless and impetuous, god. His outrages are not limited to the ocean; he also ravages the land with his storms and he darkens the sky, thus angering the 'eight million deities (the kami).
His little pesterings, especially against his sister, proved his undoing: he looses his beard, his fingernails, and all his possessions, and is banished. He wanders the earth and has many adventures, such as the slaying of the eight-headed snake Koshi and by defeating this monster he obtained a powerful sword, called Kusanagi-no-Tsurugi ("grass cutting sword"). Some other feats were conquering Korea and wiping out the plague. Okuni-Nushi, his son, eventually tricked him out of the sword.
Hoderi
In Japanese mythology, a son of Ninigi and his wife Ko-no-Hana and brother of Hoori. Hoderi became a fisherman while his brother became a hunter. His name means "Fire Shine'.
Hoori
In Japanese mythology, a son of Ninigi and his wife Ko-no-Hana and brother of Hoderi. His name means "Fire Fade". While Hoderi became a fisherman, Hoori became a hunter and eventually the ancestor of the Japanese emperors.
The two brothers once quarreled over a lost fishhook and Hoori descended to the bottom of the sea to look for it. Here he met the sea-god's daughter Otohime (Toyo-Tame) and they fell in love and were married. The sea-god then summoned all his fish and sent them looking for the fishhook until one of them finally found it.
Otohime
"Luminous Jewel". A Japanese goddess, the beautiful daughter of the sea-king Ryujin. She married Hoori and gave birth to a son after which she turned into a dragon (her father's original shape). She is also called Toyotama.
Alright, I'm done. ^_^*
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