They're both wonderful characters, and actually the two that I connected with the most, in Shiki. Overall, I prefer Seishin just by a tad, but Sunako is my favorite female in Shiki. :)

Sunako is my favorite character. <3

Sunako is cool.

I love both characters and can relate to both so, so well... but I'd have to choose Seishin. One, because he's cute in my opinion, don't ask why, and two, because he's like my male version. A novelist who feels forsaken and lonely, who wanted to kill himself. However, someone special who became his friend made him understand who he is and why he cut himself, and that it wasn't worth dying. He's such an amazing character, and I wish I could meet him. <3

I love both so much but I had to go with Seishin as his character was so deep

Never liked Sunako

Seishin is my adorable baby and I love him... But this was suuuuper hard, I loved them both.