A booklet packaged with Harta volume 73 at select stores. It's an anthology of one-shots centering on the theme of older sister. (Source: Natalie, translated)
Kazuma Kuzuhara, a high school boy who proclaims “I don't want to work,” has two childhood friends. Yukina Kotoyu and Arisa Tsukishiro are members of the popular idol group "Dimension Stars!" The two became idols because they want to earn enough to support Kazuma for the rest of his life.......? Kazu-kun, don't you dare do anything for any other girl but me! I absolutely hate the idea of Kazuma being close to another girl. I am the only one for Kazu/Kazu-kun/Kazuma. Yukina and Arisa, because of their love for Kazuma, give him plenty of pocket money to spend. They also try to keep other girls away from Kazuma out of jealousy....... He spends all this time with his “childhood idols” who are single-minded but who also love each other very much. (Source: Over-Lap, translated)
The high school girl Shioka Izumi's goal is to live a "normal" life. She wants to chat with her friends in a "normal" way, struggle with her studies in a "normal" way, and one day fall in love in a "normal" way.... The biggest enemy for this is Shioka's guardian! He has a secret that is too big to hide.... (Source: Kurage Bunch, translated)
On the day of high school graduation, Haruki confessed his love to his childhood friend, Renta. However, on the way back, the two had an accident. Without warning, Renta appeared in front of Haruki as a spirit. *"I'll always be by your side." I'll keep that promise...* The day my favorite childhood friend became my lover. On that day, he became a ghost.