Although Hirano Yuuhi's abilities are decent, she pales in comparison to someone like Watanabe Gou. Yandeta Chiyoda is very satisfied with the latter's level, a decisive person.
With his help in dealing with Chu Xi and Takagi Reina, the odds are greatly in her favor.
Of course, selling out Hirano Yuuhi was due to tonight's situation. Yandeta Chiyoda understands that only by aiding Watanabe Gou, who is entangled with the Half Ghost, can she extract more crucial information from him.
Hirano Yuuhi lacks similar experience, so even if she survives, she's of little use. Selling her out could earn Watanabe Gou a big favor from her.
Timing was vital; she extended help when Watanabe Gou was most helpless and desperate, maximizing the favor.
As she expected, after being saved, Watanabe Gou immediately expressed his gratitude and agreed to help her deal with Chu Xi.
And of course, as for Takagi Reina, that little brat wouldn't be let off either.
"Tap, tap, tap."
