This time he's pretty much confessing to you. So basically he's had a huge crush on you since he saw you from the roof of House Kyogoku. At night, cuz demons die in the sunlight. He's always in his human form with you around. He's confessed to you now. What he says is:

"Listen.. I'm not repeating so listen! I've had a crush on you for 6 months and I know I met you 3 months ago but the truth is.. I'm a demon that has been watching you for 3 months..."

He goes in his demon form