Reincarnated as a Horse, My Little Brother Is an Immortal King

[Double male protagonists (flaming horse × undead creature) Both sides are not human at the beginning + Western fantasy + can become human + kind and righteous, talkative, loves to brainstorm the flaming horse × emotionless, single-mindedly becomes stronger, stronger, and the goal becomes the strongest undead skeleton] Reincarnated as a flame horse In order to find the flame horse mother who abandoned him for revenge, Elvis exhausted his mental power and traveled across the plane. His mental power collapsed and he was trapped in a strange, lifeless undead plane. There he met a strange guy... Elena, the flame horse mother, told him that if you meet your destined partner, your heart will beat for him. Elvis: So... Destined to be interspecies? ? ? ? ? ? (As an undead creature, he may never understand your feelings.) Gong was a general who died in the war. His body was thrown into the undead plane, buried underground and turned into a skeleton. Many years later, he was awakened by the blood moon. After waking up, he became a skeleton with no memory, intelligence and ignorance.