Yes, 不倫. (It's no longer among the tags on the Pixiv page.) It could be translated as "adultery", "immorality", or "impropriety". I just chose a different nuance.
Twitch
Don't tell me...!No, nothing at this point!Thank you so much for inviting us!♡
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Hhhfffffh
Haaaaah
Whew
During the convention...Do you have anything planned for later?Don't tell me...Kogasa-saaan.Oh, hey, Lyrica-san. Long time no see!After the con, at the Ghost Band live concert venue...