OFKU-162 The son-in-law gets excited over his mother-in-law's plump and voluptuous lingerie...

My wife went into labor, so my mother-in-law came to help with the housework. My mother-in-law, whom I hadn't seen in a while, has a voluptuous and attractive figure in my opinion, but she says things like, 'I can't seem to lose weight because of my age.' She seems to only see me as her child, changing clothes right in front of me without any hesitation, which is troublesome. If I were to make a move on such a mother-in-law, what kind of reaction would she have...