IPZZ-641 _My uncle's beloved daughter

Saki Sasaki is a beautiful schoolgirl. Saki loves her mother very much because she worked very hard to give Saki a good life. Now that Saki has grown up, her mother decided to remarry her neighbor Yujiro (Toru). Although Saki really didn't like Yujiro because he looked like he was somehow perverted, because she wanted her mother to be happy, Saki did not stop this love affair. Is this the right decision for Saki? Will her mother really be happy after remarrying Yujiro? and what was Yujiro's main purpose in approaching her mother