[Harry Potter] After Adopting the Dark Lord

Cassian Orion Floraque-Black came from the era of The Chosen One.

As the heir to the Black family, he was undoubtedly a typical Slytherin: ambitious, of noble pure-blood lineage, and a believer in Pure-blood Supremacy. At his father's suggestion, he got close to Harry Potter.

But... could someone explain how he had been sleeping in the prefect's dormitory he had long dreamed of the night before, only to wind up in Wool's Orphanage in 1931 the next second, holding adoption papers to take home a child named Tom Riddle?

Wait, what? He was only sixteen. Was he supposed to raise a kid already?

At a loss, the sixteen-year-old Cassian walked into the orphanage and successfully brought the future Dark Lord home.

Tom Riddle was undoubtedly a strange child, but Cassian was so oblivious that he didn't notice.

When Tom was six, he talked to snakes and made strange hissing noises.

Cassian stood outside the door and nodded in satisfaction, thinking the child had made his first friend. Perhaps this was an interspecies friendship.

Cassian, a Hogwarts dropout, decided to apply for a job as a Defense Against the Dark Arts Professor.

Question: Can he successfully last a full year as a Defense Against the Dark Arts Professor before the Dark Lord's curse takes effect?

Answer: Sure. He can even teach the Dark Lord himself.

By the way, why is his schedule so packed?!

An offbeat, straightforward, naturally flirtatious foster brother bottom x a brooding, suspicious former Dark Lord top.

The protagonist is a time traveler. His age and appearance are fixed at twenty.

The story may feature two interwoven timelines from the earlier era. Cassian will occasionally transmigrate back to the earlier era. Essentially, they are two parallel timelines.

Transmigration: yes. Time magic: no.

Voldemort exists in the earlier era. He does not exist in the parallel world.

A slow-paced child-rearing story~

Updates whenever the author can manage, slowly building up a backlog...

Apologies for any out-of-character writing.

Theme: Love is the greatest magic