Top 7 in Top 10 best yaoi manga for fangirl.
Reibun Ike is famous for his wonderfully realistic, detailed drawings. Kobi no Kyoujin is considered her best manga, tight plot, deep two main characters. Kabu liked Nirasawa, but he thought of his responsibility in the family first, so he tried to keep his distance; Nirasawa was blinded by love. Both of them are very serious. Kobi no Kyoujin is exactly what you are looking for.