@zetsuravez personally I don't think it's a sequel, it's just that it was created by the artist and the artist just drew the character like the one from their previous work
I think this end on a great note,this series is something that you would turn off you brain and enjoy the cute stuff, there's no need for it to be that long,altho i want the couple to have a bit more development.
I've noticed that the tone is more light hearted in the serialization version,but I do love how they are more aggressive in the pre serialization version tho