Hikoyai
After Jimmu died, Empress Himetataraisuzu-hime married Tagishimimi, her stepson. Tagishimimi tried to kill the brothers but was instead killed by Suizei, who became the second emperor. Hikoyai-no-Mikoto did not have an active role in the story and did not play a significant part in the narrative. This is common in Japanese mythology where some brothers do not play a major role.