Reiji Akaba/Relationship

Himika Akaba

reiji is shown to be good terms with his mom both agree on what they are doing and are shown to have a normal mother and son relationship and himika would often call reiji san which is respected in japan

Reo Akaba

reiji consider his father as a enemy and he seems to hold a revenge for his father as it is seen in episode 25 reiji told to shun that he is prepering some duelist to defeat reo

Reira Akaba

reria is shown  to be fear when others are around except for his brother reiji reria appears to care reiji a lot even reiji also appears to care for him as well reiji seems to be a good brother to reira

Others

Yuya Sakaki

reiji is mentionded to be one of yuya rival but reiji doesent show any dislike to him and in fact reiji defended yuya when he was accused of attacking his emoloyes he appears to have a respect on yuya and reiji is also shown to take an interset on yuya as well

Nakajima

reiji is shown to be good terms with nakajima they both listen to eachothers instuction and are shown work quite well amd would often agree on each others advice

Shun

at first shun was targetin LDS in orger to capture reiji but later reiji consider him as an ally and he offered shun to take part in miami championship and enroll in LDS to fight reo and to get his sister back