The second season of Yofukashi no Uta. Ko overcomes his confusion about becoming a vampire and decides to "like" Nazuna, while Nazuna resolves to make Ko "fall in love" with her. Without understanding what "love" even is, the two of them spend their nights together in a frenzy. Meanwhile, Detective Uguisu Anko is closing in with her plot to kill vampires, not just Nazuna. A vampire's weakness is "anything they were attached to when they were human" and so they all try to get rid of this weakness before it's too late. But, Nazuna has no memory of her human life. What is Nazuna's hidden past? Why did Anko start killing vampires? And what is the "secret" that Nazuna and Anko share? For Ko, Nazuna, Anko, a fun "late night" doesn't end here... a new "night" begins!

Two years ago, the death of Naoto Watari's parents left him as the sole caretaker for his younger sister Suzushiro "Suzu" Watari and forced him to move in with their aunt. So devoted is he to Suzu that he refuses to join clubs or even hang out with anyone, earning him snide comments and the title of "siscon" at his new school. But as long as Suzu is safe and happy, Naoto doesn't care what everyone else says. However, his sneering classmates may turn out to be the least of his worries. The sudden transfer of a girl named Satsuki Tachibana brings back traumatic memories from his past—a past she had a hand in making so unpleasant. Nasty secrets, unknown to Naoto, begin to surface with her arrival, threatening his new life.

A poor baron daughter has lived under her sister's shadow, where she always had nothing. Her hair is full or hairballs, she doesn't have a single dress, and all she has are tattered clothes for work. Her sister receives the attention of a high rich noble, but she dies on the way to her marriage. Marie is sent as a substitute bride for her sister because the baron cannot repay the already sold dowry to the earl. But... that's impossible? In the first place, the proposal was a misunderstanding? A beautiful and happy story of love about a fallen baron's daughter and an eloquent earl.

Hero Toto possesses great skills, but his extreme shyness has left him unable to form a party, causing him to remain stuck in the town where his journey began. One day, he is suddenly invited to join a party by three beautiful women—Ciel, Anemone, and Gore. Overjoyed at finally setting off on an adventure, Toto is filled with excitement... but little does he know, these women are dead set on killing him! A deathly harem romcom unfolds as the socially anxious hero, who faints from mere flustered excitement around women, finds himself the target of three deadly companions, each with their own reasons for wanting him gone!