So I gave away my old iphone for a christmas present when I upgraded to an new android and lost all of my manga history on manga storm. I am trying to restore my manga collection and need help finding the names of certain mangas.

The first was where this guy is training to draw manga and ends up working for this loli mangaka who he falls in love with.

The second was where this guy falls in love with this girl who works at a park in this costume and he like cleans up the trash and plants the flowers. They meet and go on the bus together.

The third and final is where there is this kid who lost his parents wants to be the strongest and meets this little girl who was part of this organization. I don't remember very much but I do remember that his move was "demon horn" and basically becomes an assasin in his pursuit to become stronger.

Any help is appreciated.