I recommend this for

Readers who enjoy dark regression stories with complex, borderline yandere heroines, don't mind (or actively seek out) very heavy and frequent smut interspersed with plot and action, and can overlook pacing issues caused by said content.

i DO NOT recommend this for

Readers who dislike gratuitous fanservice/smut, prefer consistent tone and pacing, are looking for a purely action-focused story, or are sensitive to themes of manipulation and questionable consent within romantic/s*xual contexts.

THE STRENGTHS, OH GOD

The power system is good, using Equivalent Exchange, the story forces MC to have a cost benefit decision quite often, allowing the author to "in the characters words" pick out the route to go, without it feeling like a self insert. The addition of Lightning God, Eve (>>:)), and the later soul-based mechanics make this system feel interesting.

On top of that, the threats are there. From the academy rivalry and the cult attacks and the god like beings, it sounds like a weird whimsy of "one thing to the next" but the MC is almost always outmatched, and forced to rely on his wits, sacrifice, and the witches themselves. And on to the witches

This is definitely a harem, the girls are fraught with obsession, manipulation, trauma bonding, and genuine, but twisted affection. The dynamics between the main heroines (I'll list them here so you know what to look for) is the driving force of the entire story.

Yuri, Seol, Soo-yeon, Se-ah, later Irena, Camilla, Eve, Sera

Worldbuilding is good, plot will slowly reveal the truth behind the regressions, the nature of the witches, sacrifices, the altar, the overarching conflict with Setia and Se-ah. its fairly nice.

THE BAD STUFF

Solutions appear conveniently, Se-ah's regression and interventions feel as if they guide the plot, and with artifacts and allies appearing at just the right moment, its a bit unappealing. On top of that, the pacing isn't in the right place. The story itself runs fast, but some arcs feel rushed on top of feeling fast, like the Kim Sung-ho conflict, and others can feel very repetitive.

the MC is very reactive in terms of figuring out the emotional landscape around him until sh*t hits the fan. It feels very typical and I just dont really like it too much. Guy's dense from the trauma.