Shin Ichiyanagi pilots the High Agility Versatile Weapon Carrier (HAVWC) for the United Nations Special Development Command unit in Uddiyana. His covert missions focus on retrieving a stolen symbolic flag vital to peace negotiations. Demonstrating advanced combat proficiency, he led the assault to recover the flag from an extremist stronghold under intense enemy resistance.

Ichiyanagi maintains psychological detachment during combat, exhibiting calm breathing patterns while piloting the HAVWC in high-intensity engagements. This contrasts with signs of psychological strain following prolonged mecha operation. His technical expertise extends beyond piloting; he contributed to developing smaller mecha prototypes. This specialization led to his temporary release from investigative detention to pilot such experimental units during critical missions.

He repelled an incursion by an unidentified Chinese XR-2 mecha prototype, engaging superior forces to defend the SDC training camp. During the UN headquarters hostage crisis, Ichiyanagi piloted the HAVWC in counterattack operations alongside fellow pilot Chris Eversalt, utilizing the mecha to support ground troops. His military background suggests extensive combat experience, contributing to his reserved demeanor and operational reliability within the multinational SDC unit.