Shinshi to Norainu
1-4 - College student Banri has a one night stand with Masaomi, a well-educated business man. But when Banri wants to meet again, Masaomi confesses that he has a fiance... 5 - A company president who seduces every secretary he's ever worked with gets a strict new secretary who definitely isn't his type 6-7 - A divorced business man falls in love with a train station attendant
Shinshi to Norainu dj - Shisen no Sono Saki
Original story: http://www.mangago.me/read-manga/shinshi_to_norainu/bt/c005/pg-1/ Yamaoki and his secretary Eda finally get some time to themselves at a hot spring
Junjou Mistake