I'm curious about my girlfriend's past, and I'm pretty sure I'm not alone! Ichirou, a dull guy with nothing interesting about him, has a miraculously cute and beautiful girlfriend. Her name is Yukika, and she is out of this world and wildly in love with him. At the peak of his happiness, one day he meets a man who tells him that Yukika used to be a slut. Ichiro understands in his head that his current life with his girlfriend is important, but he is caught up in a spiral of dark fantasies about his girlfriend's past. Using a VR time machine that faithfully recreates the world of the past, Ichirou makes a forbidden move...!

1. **Blue Something** (ブルー･サムシング) 2. **Okaerinasai.** (おかえりなさい。) 3. **Umi wa Sora wo Utsushite Aoi** (海は空を映して青い) 4-5. **Tochuu no Sumika** (途中の棲家) 6. **Hoshi no Yukue** (ほしのゆくえ)

Tatsuya Kageishi's boring life changed to a life of an otaku fan when he saw Aoi Tsubasa, an idol with outstanding singing ability. However, the gal Maika Akabane in his class turned out to be Tsubasa herself, hiding her true identity! But Maika had a problem. If she did not find a boyfriend soon, she will be forced into an arranged marriage and have to retire as an idol. Tatsuya was in despair when he heard the news, but then she asked him to become her fake boyfriend. To show that they are really lovers, they'll have a lovey-dovey photo shoot, walk to school together, and go to an amusement park on a holiday! At a live concert, she gave him a secret wink! Maika, whom he thought was just gal who liked to make fun of others, showed an unexpected side of herself....... The fake love story between an idol with a secret and her most obsessive otaku fan is about to begin! (Source: Kodansha, translated)