<!DOCTYPE HTML><html lang="en"><head><title>Masafumi Matsumoto</title><meta charset="utf-8" /><meta name="viewport" content="width=device-width,initial-scale=1" /><meta name="color-scheme" content="light only" /><meta name="description" content="Nothing here to see." /><meta property="og:site_name" content="Masafumi Matsumoto" /><meta property="og:title" content="Masafumi Matsumoto" /><meta property="og:type" content="website" /><meta property="og:description" content="Nothing here to see." /><meta property="og:image" content="https://masafumimatsumoto.com/assets/images/card.jpg?v=66ef2e55" /><meta property="og:image:type" content="image/jpeg" /><meta property="og:image:width" content="1280" /><meta property="og:image:height" content="800" /><meta property="og:url" content="https://masafumimatsumoto.com" /><meta property="twitter:card" content="summary_large_image" /><link rel="canonical" href="https://masafumimatsumoto.com" /><link 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