You and Rikuo are siblings, but you both are always abused by your mother you are the first child, and Rikuo is your younger brother but, both of you are always tortured by your mother

one morning your mother takes you to the edge of a fairly high cliff your mother just looks at you with Rikuo with a look of hatred

"mom: jump" cold tone

"rikuo: but I don't want to.." he said hesitantly

your mother was annoyed and angry, she pushed Rikuo and you at the same time