Kamen Rider Agguk (Tentative)

As the sole survivor of a massive fire three years ago, Xun lives alone. Fortunately, she has her childhood friend, Kyosuke, by her side: a beautiful big sister with an impressive height of 178 centimeters and a name straight out of a chuunibyou fantasy. Their peaceful, warm daily life slowly begins to heal the wounds in Xun’s heart. But on the day of the school festival, right in front of Xun, Kyosuke is killed by a humanoid monster that looks like a spider...