Sawai is a pacifist at heart, but also a rationalist in the face of the dangers that threaten humanity.
In the 21th century, Sawai was a secretary general at the United World and thus advocated the formation of TPC, being the head and founder of the said organization and a strong advocate of GUTS. The reason for oftenly participated in field operations is due to Sawai being dedicated in making contact with extraterrestrial life.
During Gatanothor's descend, Sawai evacuated the TPC Japan Base to the Artdessei alongside the others after Gatanothor's darkness reached the base. He ordered Tetsuji to evacuate after the latter wished to stay with the base TPC Japan Base. Sawai then watched Tiga battle with Gatanothor and eventually know that Daigo is Tiga after the Ultras' defeat. Later on, he recruited Keigo Masaki to participate in the campaign to revive Tiga by delivering the light to the Ultra. After Gatanothor's death, Sawai congratulated Keigo for his efforts and celebrates humanity victory with his allies.