【Content】 ・By the way, which number is it now? ・Shiro-kun's first. 1 ・Shiro-kun's first. 1 2P leaflet This is a set of two books by Sensei Yokota Tanaka Mori. "Shiro-kun's first" is a sequel to "By the way, which number is it now?". If you wish to purchase with other items, please let us know before purchasing.