He is very calm and cool-headed, A strong fighter in his own right and a well-respected figure in Suzuran.
Ebizuka Mid Edit
Before entering high school, Gunji attended Ebizuka Mid, around this time he was very shy, timid and insecure, he didn't have many friends aside from the Trio who ran Ebizuka Mid in their third year,Hiromi Kirishima, Makoto Sugihara and Toshiaki Honjou.
Later, Gunji would take up leadership over Ebizuka Mid after the Trio graduated.
Upon his arrival into Suzuran as a first year, Iwashiro Gunji had become a known man. Now recognized as a fierce delinquent, he initially showed disappointment in his middle school seniors, the Ebizuka Trio, because of their new casual attitudes towards the delinquent life. To Gunji, they had all gone soft from following Bouya Harumichi .
Even so, his opinion would eventually change after failing to win the Freshmen War.
Gunji was the witness of the final fight of his generation's Freshmen War, between Hanazawa Saburou and Katou Hideyoshi , with Zetton coming out on top as the winner . Afterwards he decides to challenge his old Ebizuka senior, and then Suzuran senior Toshiaki Honjou, a fight which Gunji lost despite pushing Pon to his limits .
They got into some fights and later helped the Harumichi Family in the last battle.
Despite having to put this matter away because of police interference, he and Yonezaki Takayuki would later run into them and Gunji gives Kai a severe beating, even throwing him through a phone booth window .
He was respected and feared by many delinquents in the area due to his reputation of being calculating and methodical, and was seen as important enough to be targeted by King Joe during the war with Housen.
A strong and fearsome fighter, Iwashiro was one of the men responsible for maintaining the schools high reputation during his time at Suzuran.
After Suzuran Edit
After graduating Suzuran, Gunji would go into his family's business of carpentry.
- Gunji vs. Takeuchi - Won 
- Gunji vs. Udo Yasunori, Morita, Takeuchi, Tajima - Lost 
- Gunji vs. Pon - Lost 
- Gunji vs. Shiga Yukio - Lost 
- Gunji vs. Kai Yasunori - Won 
- Gunji vs. Mitsunobu, Mitsuyoshi, several underlings - Lost