Ep. 4: Ria Hagry visits Japan, races Kirino, and asks Kyosuke to be Kirino's boyfriend.
Aired on April 28, 2013

Kirino’s former American track rival, Ria Hagry, arrives in Japan and stays at Kirino’s home. Kirino acts protectively, frequently punishing Kyosuke over minor misunderstandings. The siblings take Ria to Akihabara to introduce her to Kirino’s hobbies. Ria then challenges Kirino to a race, acknowledging the motivation that drove Kirino to defeat her previously. Despite Kyosuke’s encouragement, Ria wins, feeling satisfied with her revenge. Before departing, Ria suggests to Kyosuke that he is the primary reason Kirino strives so hard, a claim Kyosuke doubts. Following Ria’s departure, Kirino makes a strange request for Kyosuke to act as her boyfriend.
Episodes
- Ep. 1 · Kirino and Kyosuke navigate post-return life and Akihabara shopping
- Ep. 2 · Kyosuke's Addiction to Love Touch Angers Ayase Who Imitates the Yandere Route
- Ep. 3 · Kyosuke and friends surprise Saori with a birthday visit to her apartment
- Ep. 4 · Ria Hagry visits Japan, races Kirino, and asks Kyosuke to be Kirino's boyfriend.
- Ep. 5 · Kirino and Kyosuke pretend to be a couple to avoid working abroad
- Ep. 6 · Kirino Falsely Claims Kouki Is Her Boyfriend Amidst Family Tension
- Ep. 7 · Kyosuke and Ruri Officially Become a Couple After the Party
- Ep. 8 · Kyosuke learns Ruri's guidebook aims to reconcile him and Kirino before their breakup.