Exclusive T & Exclusive P
The copywriting is useless, just read the text.
It's probably a story about two women (nonsense! How can you get Lily if you're not a woman?) From adolescence to 27 years old, maybe into their twilight years?
The heroine is a very gentle person.
The real heroine is... Well, how should I put it? People with bad tempers and unruly beliefs believe in perfectionism.
By the way, the real heroine died at the beginning of the story.
Next is the heroine's recollection. As for the murderer, there are many suspects.