Mayuko was trying to contact Takagi several times on the phone, but now she sends letters to her work. Yikes.
Takagi was responsible for Makoto first breakthrough, because she found liking in him from the start, seems like now is romantically interested also.
Takagi was sleeping with Ayahiko too? Was it in highschool or when he was married? Guess she poured fuel to the Mayuko condition...
Ayahiko was a real piece of shit.
Thanks for scanlation!