Moroizumi Shigeru is a renowned installation concept artist in the modern Japanese art scene because of the thermometer language that he has created. This language started from his early works on media such as wax, plaster and resin, which require accurate control of temperature. He began to transfer his attention to the temperature measuring tool - thermometer. Through the expansion and contraction of the liquid in the tube, the thermometer visualizes invisible natural phenomena, and shows the change of hot and cold in people's living quarters. Moroizumi Shigeru removed the markings on the thermometer, so that it seems like it has lost its communication ability because of the missing units for reading. This is also the way through which he has started to view the content of the thermometer from a new angle. He then began to record and exhibit the temperature of the natural environment, the rotation of the Earth, the revolution around the Sun and the change of emotion in human beings.
The works of Moroizumi Shigeru are shown in the store closely related to temperature – the chocolate specialist, Casa del Cacao. The temperature control in the store and in the production process of chocolate, as well as the feeling when chocolate is given as gifts for friends and relatives, are all integrating with the thermometer works of Moroizumi Shigeru. It is more than a direct association of the physical "temperature", it is more on the psychological horizon, as thinking of someone changes the temperature of our hearts. On his persistent on original creation, Moroizumi Shigeru once said, “My work is to exhibit these fine and invisible changes continuously through visual language.”