The former angel that melts is Gachim Chibody (1st volume all volume)

Publisher: Shodosha
Author: Tomomitsu Yamamoto
Size: 128mm x 182mm
Number of books: 1
Language: Japanese
Category: Female manga, manga
Latest release date: 2018-12-25

Synopsis:
Koharu Tsukimiya, the daughter of the martial arts dojo, is helped by a passing host where he was approached by a Nampa man. The host was Masumi, a childhood friend who used to protect her from bullying.
Masumi was growing into a strong adult man with a much higher height and unimaginable, although he should have been as cute as an angel in a quarter.
The strong force to hug, the hard breast plate, the low voice, the old man from the old Masumi ...!? And the occupation / host!?
In order to survive the dojo, Masumi quit the host and lived as a teacher on behalf of Koharu's father in the hospital. What will happen to living together under one roof?