Five/seven-trunk style – This has a multitude of trunks, usually of an odd number. Gokan (five trunks) and Nanakan (seven trunks) refer to those bonsai with distinct, countable trunks, each of which has a stronger presence than the trunks of a Kabudachi.
In nature, trees are forced into all kinds of shapes under the influences of weather, wind and placement. Consequently, bonsai trees can have many shapes and sizes and, depending on their way of growing, they are grouped into various styles and shapes.
Maybe some shapes seem strange and unnatural, but they are all based on the way trees grow in nature. Each tree, however, has its own character and within a certain style there is still an enormous variety. Usually a bonsai tree is given its name according to its shape or the number of trunks it has.