Both are yaoi. In the first one, the seme has a black snake on his back and the uke has a white snake. I think they're yakuza (?). The other one is this guy who saves a kid from a car and ends up getting hit himself. The kid exchanges his life for the man to give him his one wish: to have his crush fall in love with him.
Im searching for an anime, it features a girl wigh purple hair and a dat like disposition. Her friend (crush) is a boy with glasses and brown hair, who, for some reason, attracts cats. The girl is a total tsundere and i dont think ever tells him that she likes him. Either way, its cute and funny, and also includes a male and female blonde supporting character. Theyre all funny.
I have always loved the beautiful artstyle of these mangas. Hat tip to the mangaka for getting my attention and making me read all of their books just for the wonderful art.