|Current Affiliation||Kawai Boxing Gym|
|Wins by KO||17|
|Championships||JBC Middleweight Champion|
|Manga Debut||Round 50|
|Anime Debut||Round 19 (The Fighting)|
Yajima was the JBC middleweight Champion and had defended the title 6 times, easily defeating all of his challengers. For his 7th title defense he was scheduled to fight against Takamura Mamoru. He had a well organized cheering squad even wearing matching T-shirts.
The match began and Yajima was quickly pushed to the ropes by the powerful Takamura, however he trapped him into believing that his guard was open, which he fell for and countered Takamura hitting him square in jaw, bringing Takamura to his knees for the first time in his career. Takamura had trouble getting up, however thanks to Ippo's cheering he managed to. The match continued and he began attacking Takamura, trying for the KO, however Takamura easily avoided all of his strikes and then fought back, pushing him to the ropes, Yajima attempted to use the same stategy for the second time, but Takamura didn't fall for the same trick twice. Yajima was then beaten very hard and lost by KO.
|LOSS||18-4-0||Takamura Mamoru||TKO||1(10), 1:30||1991-10||Tokyo, Japan||Japanese Middleweight Title Match|
Yajima is a good boxer, considering the fact he was the JBC Middleweight champion and the first man to score a down against Takamura (Thought this happened because Takamura was more stressed than usual). He is noted to be a straight-puncher by Yagi . During his fight with Takamura he was seen making use of feints, counters, and straights.