Farewell in Overtime Home and Away (Kokomi)

I am listing this item because I accidentally purchased multiple copies.
It has been stored in a dark place without being read even once, so there is no sun fading or major scratches, but there is a crease on the top of the cover.
It is not torn.
The contents themselves are not dirty, so there is no problem with reading it.
Price reduction is not possible.

[Synopsis]
Tsukushi, a hairdresser, and Kiryu, a novelist, are a reunited couple living together.
They once decided to break up due to differences in lifestyle and values, but after realizing each other's importance when they were apart, they are now living happily while respecting each other.
One day, prompted by a letter from Kiryu's mother, the two begin to consider coming out to their parents.
What action did Tsukushi take for Kiryu, who has not been able to tell his mother that Lovers are same-sex due to past events...?