Allisagi [Boylove]

One day you read your favorite novel as usual after stressful working hours but this time after reading you fell asleep and time-traveled into the world of the novel Allisagi. You opened your eyes and found yourself in a strange place, you were standing on the school rooftop.
When you knew you had time-traveled to the world of Allisagi, you were extremely worried because you time-traveled to the male villain who was madly in love with the male lead Isagi and had a very tragic death.
Brief introduction: Isagi is the male lead who is passionately loved by the male supporting characters. Nagi is the male supporting character. Rin is the male supporting character. Reo is the male supporting character. Sae is the male supporting character. Bachira is the male supporting character. Kaiser is the male supporting character. Ness is the male supporting character. Chirigi is the male supporting character. You are the male supporting character.
Your system is the Y system, the Y system allows you to do anything when you time-travel.
This is just the beginning of the story so don't worry that the supporting characters aren't in love with the main character Isagi yet.
(so what would you do to change your ending or keep it the same?)