His work often uses the haboku or flung-ink technique. This method involves applying layers of ink in quick, expressive washes to suggest form without using hard outlines. In works like Mountain Landscape and River Landscape, he balances empty space against dark, saturated ink. He focused on the structural logic of rocks and trees. His compositions are often sparse. He used a sharp, angular brushwork that distinguishes his style from the softer interpretations of the Suiboku school.

Modern collectors value the minimalist quality of Shūgetsu's ink paintings. The monochrome palette allows the texture of the paper and the movement of the brush to remain visible. These prints suit contemporary interiors that favour clean lines and neutral tones. The abstract nature of his flung-ink landscapes provides a sense of calm. His work offers a connection to the Zen aesthetic of the fifteenth century through a lens of disciplined simplicity.