Hi ! The first one is probably :
http://www.mangago.me/read-manga/samishigariya_no_love_letter/
Then I can totally picture the second but I can't find it anymore... maybe it'll come back to me :)
1: Samishigariya no Love Letter
2: junjou bitch
The first one: http://www.mangago.me/read-manga/samishigariya_no_love_letter/ (first story)
That's one of my favourite stories :) and sorry idk the second one
Oooh yay!!! Thanks everyone~
(≧∀≦)/
1. A uni guy would get letters from some highschool kid in the past, they became time-separated pen pals. The guy would put a paper into this box, which would disappear and be replaced by the letter from the kid. And the uni guy had this one eccentric friend who would always wear animal mascot heads in his pictures (for a reason that is later revealed :] )
2. A uni art student is in love with his stoic best friend. He has a side job as a male escort and has been sleeping for pay for quite a while, but doesn't dare tell his friend about it. The friend however would paint portraits of the art student and would touch himself while looking at the paintings.
Any help would be appreciated ~