Saka no Ue no Kumo

After finishing her studies, Bo returns to Thailand and finds out that her boyfriend has married someone else. Wanting to numb the pain, the girl goes to a bar for a drink and almost falls into the clutches of a bad guy. By a lucky chance, she is saved by Thoth. He doesn't know that Bo is the ex - lover of her sister's husband. To protect his sister's marriage, he tries to make Bo fall in love with him and marries her. But what happens when the main character finds out that this was just Thoth's plan? Or will there already be passionate feelings between the characters by then?