Sure, here is the translation:
Shirakawa Sawahei was quite depressed. He clearly saw the strategy progress for Little Invisible crumble, but didn't react in time. To others, it seemed as if he was unhappy with Azusa Stonefield contacting the Calligraphy Club and was expressing his anger through silence.
"That's not the case, I was just thinking about something."
He gave a simple explanation, and only then did Azusa Stonefield and Tachibana Tomoku look relieved. As for Yuri Hime, there's no need to mention it, she was almost scared half to death by Demon King Shirakawa just now.
Given his current status in the Calligraphy Club, if he really wanted to obstruct her and Tachibana's contact, he could absolutely do it. Fortunately, Shirakawa Sawahei didn't turn into a demon and forcibly separate her and Tachibana. Otherwise, Azusa Stonefield would have wanted to make a little doll at home to vent her anger on with needles.