Complex sentence: Matsuri Takahashi, then 24, committed subside in Christmas Day of 2015 after excessive overwork in Japanese major advertising agency, Dentsu Inc. It was only 8 month after she got her first full-time job at Dentsu, right out of college.
Split into simpler sentences: Matsuri Takahashi, then 24, committed subside on Christmas Day of 2015 after excessive overwork at Dentsu Inc., a major Japanese advertising agency. Her suicide occurred only 8 months after she got her first full-time job at Dentsu, straight out of college.