Mysterious Girlfriend X Volume 4 features story and art by Riichi Ueshiba.

The popular idol Momoka continues her mission to live the life of a normal high school girl by thrusting Urabe into the spotlight, which culminates in a moment of truth for Urabe and Tsubaki. But will Tsubaki be tempted away when the sloe-eyed beauty Suwano makes a play for his affection?

Mysterious Girlfriend X Volume 5 features story and art by Riichi Ueshiba.

Tsubaki gets roped into acting a movie written, directed and produced by the VP of the film studies club, Matsuzawa. The script for the film turns out to be eerily similar to Tsubaki and Urabe’s real-life relationship, with a twist ending that is surprisingly moving. After the film screens at the culture festival, Tsubaki worries that what used to be a unique ritual with Urabe will become something commonplace…

Mysterious Girlfriend X Volume 6 features story and art by Riichi Ueshiba.

As the school year wears on and the warmer months arrive, the boys enjoy the sight of the girls in their softball uniforms and swimsuits. Tsubaki invites Urabe to watch the fireworks from a place that holds special memories for him. Oka describes how she and Ueno first started dating, and Urabe comes clean to Tsubaki’s sister about their relationship. When Urabe “sees” an important event from Tsubaki’s past, she makes him an offer that will bind them together even more closely…