Yokomitsu started coterie magazines such as "Machi" (Street) and "Tou" (Tower) after entering an private school, Waseda, in 1916. In 1923, he published "Nichirin" (the sun), "Hae" (a fly) and more in the magazine, "Bungeishunjū", which made his name popular. Next year, he started the magazine, "Bungei-Jidai" with Yasunari Kawabata and others. Writers of this magazine is called as "shin-kankaku-ha" (a group of new sense).