Responses
If I remember correctly, Kaikan Phrase (Sakuya/Aine etc) or Love Celeb (Gin) don't make cameo in Haou airen.
SPOILER
Sakuya (after marriage & one kid with another expecting) and Hakuron (before meeting Kurumi) make appearance in Love celeb manga individually... I dunno in which chapter exactly
What chapter is Kaikan Phrase cameo?