BiS (Make Farewells More Beautiful - 5*)

Engrave

Increases the wearer's Max HP by 30% / 37.5% / 45% / 52.5% / 60%. When the wearer or their memosprite loses HP during their own turn, the wearer gains "Death Flower," which allows the wearer and their memosprite to ignore 24% / 25.5% / 27% / 28.5% / 30% of the target's DEF when dealing DMG, lasting for 2 turn(s). When the wearer's memosprite disappears, advances the wearer's action by 12% / 15% / 18% / 21% / 24%. This effect can only trigger up to 1 time, and the trigger count resets every time the wearer uses Ultimate.

⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤ʚɞ⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤

2nd Best Option (Sweat Now, Cry Less - 4* BP)

Come Train!

Increases the wearer's CRIT Rate by 12% / 14% / 16% / 18% / 20%. When the wearer's memosprite is on the field, increases the wearer and their memosprite's DMG dealt by 24% / 27% / 30% / 33% / 36%.

⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤ʚɞ⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤

3rd Best Option (Memory’s Curtain Never Falls)

Reception

Increases the wearer's SPD by 6% / 7.5% / 9% / 10.5% / 12% . After the wearer uses Skill, increases the DMG dealt by all allies by 8% / 10% / 12% / 14% / 16% , lasting for 3 turn(s).

⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤ʚɞ⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤

Other Options (Reminiscene - 3*)