Start with the Mangekyo Sharingan

You kill a monster and gain the skill: [Monster Power] You were attacked by a monster while going to the toilet. You killed it and obtained the skill: [Mangekyo Sharingan] Being really bored at home, you start looking for weird things all over the world. You get: [Twelve Trials] [Susanohu] [Immortal Technique·True Thousand Hands on the Top to Transform the Buddha][Eight Doors Dungeon][Field·Conquering Demons and the Cook]………… You strengthened the [Mangekyō Sharingan] and obtained the [Eternal Mangekyō Sharingan] If you think it's not enough, strengthen it again and get the [Reincarnation Eye]