The Days My Sisters and I Spent Behind Secret Identities

A 175 cm baby-faced heroine who is a chronic ghoster & her 167 cm artist friend who still wants to grow taller

Dual first-person perspectives: the heroine's perspective is "I," and her friend's is "my friend," though the story mainly follows the heroine. No CP, but there is one-sided love. If you insist on calling anything a CP, then it's the heroine and her friend's friendship.

A slow-transmigration story. The heroine and her friend share one System and will have various secret identities, both male and female. Some of their secret identities are original characters, while others are not.

All the worlds the heroine and her friend transmigrate to are fictional, so don't judge them by the values of the real world, since to them, it's just a "game." Still, I'll do my best to avoid that kind of situation.

Worlds planned so far:

[Apocalypse] Surtur x Thorns (In the first world, the heroine and her friend chose the invincible Surtur and the supreme Thorns, who can end a game as soon as it begins, as their main secret identities, just to be safe.)

Theme: Just how wonderful it is to have a lifelong soulmate of a best friend