Tozumi has gained popularity with his Pink Army series, which iconizes the gap between reality and fiction. Tozumi's thoughts and feelings differ depending on the time of production, he always painted with an emphasis on the radiance coming from his motifs. In recent years, Tozumi has developed an "imaginary world" incorporating not only the many toy motifs in his collection, but also natural objects. The symbolic depiction of the Pink Army, which acts as a storyteller connecting the stories scattered across the screen, has been popular. Past exhibitions have been held at the Taro Okamoto Museum of Art, Hamada Children's Museum of Art. Shimane, Tomioka City Museum, Tokyo Metropolitan Art Museum, Sompo Japan Nipponkoa Museum of Art, and Fukui Fine Arts Museum.. In 2023, he exhibited his works at Art Fair Tokyo, and he caught the attention of many art collectors. How to imagine the world 「When I was a child, I loved toys, imagining stories, making robots fight each other, putting things together to build imaginary cities, and so on, immersing myself in a world of imagination. I haven't forgotten that feeling, but unlike in the past, the knowledge I've gained in my life so far and the shocking news that comes to my mind every day are also somewhere in my mind, These things also enter the world of my imagination. However, I am still searching for the beautiful world that I think about every day. I have always painted a world where all the colors are there, like the toy shops I used to love, and where everything shines. Some of these paintings are of living flowers, which is unusual for me. I spend more time at home and have started to grow some roses in my garden. I prune them, feed them and pull out the weeds. After two years the vine roses are now producing many flowers. The life of a flower is fleeting. The most beautiful moment is when they bloom at dawn and then wither within two nights. Such a moment of brilliance was a sight to behold! 」（Keitoku Toizumi）