[Crossover] This Is a Fake Dark Honmaru

Shi Yao only wanted to find a cheap rental, but unexpectedly received an invitation from a shady real estate agent. It brought him to a fully furnished Japanese-style residence reputed to be "nestled against the mountains and waters, with peaceful surroundings." The courtyard was lifeless, and crows cried mournfully in the treetops. Shi Yao finally understood what "Images are for reference only; the actual product may differ" meant. One week later: Kitsunetsuki (relieved): "Master of the Citadel, thank goodness you're still here. I thought your head had surely been separated from your body by now..." Shi Yao: "What! The swords want to kill me? No, they've all been so nice to me!" ...I heard this was a corrupted citadel. This must be a fake corruption × #Master, we're seriously corrupting over here, could you please play along?# Reading guide: [1] Sweet story √ Healing √ A dark citadel without angst √ The pairing is set: Tsurumaru. [2] Original settings √ Details explained in the story. [3] The heroine is a sweet, easygoing girl. Some may think she's a doormat, but she has her own principles. Theme: Work hard to change your fate.