As of chapter 4, I am intrigued, but, like Nasa, there are so many questions I want to ask Tsukasa that have yet to be answered...
1. How did Tsukasa save Nasa without becoming injured herself (that is presumably his blood on her)?
2. If Tsukasa is 16 now, how old was she when she saved Nasa? 12? 13? He just turned 18 and when he first met her he was in his 3rd year of middle school, so he was probably only 14 or 15.
3. How did she know where he is living?
4. Why did she wait so long before she went to see him?
5. Why was she in such a hurry to register the marriage certificate after only meeting him for the second time? (Are Japanese marriage bureaus really open 24/7?)
6. Can she really read his thoughts?
7. Just where does she have to go and what business does she have to "finish" right after registering the marriage certificate, and so late at night at that?
8. Just who is Tsukiyomi Tokio and what relation does this person have with Tsukasa?
9. Just exactly what are her intentions??? Yes, Nasa, you should be worried!
Frankly, it's all so convenient that it seems like a setup and Nasa is just being used as a pawn in some scheme. If nothing else, it seems more like a business arrangement on Tsukasa's part. She hasn't shown a shred of any emotional or romantic inclination toward Nasa, particularly the way she was coldly bossing him around.