Oh puppy, answering the first question is a two-edged sword. Let's simply say writers put a little bit of themselves pretty much in every story they wrote, I guess.

For your second question, I'll be more clear (sorry). I think my favorites are Werewolf Heart (fushisuku) and Neutron Dance (sukugo) for different reasons – the first prompted me to write more, the latter let me nerding a little bit hehe.

But I must admit I care about every story I wrote, I had fun writing them, they're my children.

Thank you for your questions btw. :*