The academically gifted and polite classmate who often helps Shizuka.
Dekisugi represents the academic standard Nobita struggles to match.
Nobita tries to become equal to Dekisugi by studying harder, but his effort is futile.
Shizuka and Dekisugi are associated through Dekisugi's academic excellence.
The plot says Nobita's efforts to woo Shizuka end up making her closer to the ace student Dekisugi.
Explore the full interactive character relationship map of Stand by Me Doraemon