Just for those that are curious how the "Scores" end up over the course of the manga
Ch21 : Draw
Ch22 : Fujiwara's Victory (due to being able to read Shojo Manga in solitude to her heart's content.)
Ch23 : Shirogane's and Fujiwara's Victory
// Introduction: Yui Ishigami
Ch24 : Ishigami's Loss
Ch25 : Kaguya's Victory
Ch26 : Shirogane's Loss (Due to failing to recruit a coworker for his part-time job)
Ch27 : Fujiwara's Victory
Ch27.5: Shirogane's Loss (Due to making Kaguya mad)
Ch28 : Shirogane's Loss (Due to having an entire truck full of love)
Ch29 : Shirogane's Victory (Due to briefly experiencing the feeling of having a harem fight over him)
Ch30 : Kaguya's Victory
[Shirogane]: Victory 1>3, Loss 2>5 :: [Kaguya]: Victory 2>4, Loss 4 :: [Both]: Draw 1>2, Mutal Defeat 4, Mutal Victory: 1
>> [Fujiwara]: Victory 0>3, Loss 1 :: [Ishigami]: Loss 0>1
Vol3 Final Score: 7:9 for Kaguya