He was at Hogwarts, and had just become a Half-Blood Prince.

[Parent-generation; multiple female protagonists; no system]

…

In 1976, 16-year-old Severus Snape welcomed a new life.

That year, Voldemort had not yet split his soul into seven pieces.

That year, Nagini was still hiding in the forests of Albania.

That year, Pandora was still doing wonderful experiments at Hogwarts.

That year, Ms. Rosmerta was in her prime and very graceful.

That year, Snape decided to experience this wonderful world.

[Otome + group favorite + hilarious + child-generation + parent-generation + multiple male leads] Travel back in time and become the whimsical Luna Lovegood. By day, you're a diligently studying, self-consciously guarding your vest. By night, you're a Hogwarts ghost, traveling through time and space. Luna's tangled love story with talented wizards unfolds. Otome warning! This is an otome novel! Not a drama! Avoid Leon!

Snape: You mean... you are my future woman?

Sirius: Why do you keep looking at that old Bat?

Lupin: Thank you for being my friend.

Fred: You're definitely the best prankster in Hogwarts!

George: Fred is right!

Draco: Why are you in my father's diary?

Cedric: You're pretty good... I think...

Wood: Who are you to say Quidditch is not elegant?

Riddle: Miss Ghost, it was me...who met you first...wasn't it?

Krum: Be my dance partner...ok?

Zabini: You barely meet... my aesthetic standards, right?

Nott: Can you give this to me?

(Otome + multiple male protagonists + sweet love + separate endings + parent generation + child generation) Lina, a male health expert, traveled through time to the magical world of Harry Potter and became Selina Lestrange, a therapist at St. Mungo's. She was also a crazy fan of Sirius Black. She took advantage of her position to go to Azkaban every day, but it was hard for her to "deepen her roots" in a field she was not good at.

See how she shakes off the label of "star chaser" and "rebuilds her reputation" at St. Mungo's! And wins everyone's love (mistake)!

Sirius: That woman has changed! How come she's still... pretty?

Snape: I don't have that disease, thank you!

Lucius: I heard that you can help me give birth to a daughter?

Bill: Thank you for your care every time

Barty Jr.: You saved me, my life is yours...

Please look forward to more male protagonists——

(Sirius chases his wife to the crematorium ➕ all members survive ➕ private settings like mountains, focusing on otome literature for a hundred years, the official pairing may be broken, if you don't like it, please don't enter)