After hearing his words Rena wasn't so much as relieved as maybe what Noboyuki wanted, but only that much more confused. The signals he was giving were conflicting, giving her a gift was one thing, and honestly there wasn't any harm in a simple gift by itself. It was other things though, could possibly have something to do with when he presented that collar, which was really during an emotionally charged time, least for her. More importantly however was the collar itself, a heart being a symbol for love was very strong in Eskarian culture, if not love then one of deep companionship. 

"I... it doesn't matter... nevermind, you're still right, I didn't mean to waste time." Rena spoke flatly, with a new emotion of confusion, or maybe frustration, rejection? In the end she wasn't too sure what it was, but it didn't help at all. Rena pulled way from Noboyuki, she'll have to take more time to think this over, plus despite what she wanted to say, the more diplomatic response was not to respond, guarding against unknown feelings fogging her own judgement. What was she doing? What did she even what? What did Noboyuki even want? 

Good news is they finally were back on track, moving towards their original goal, this time with unexpected baggage unfortunately. Not much had changed from before, Rena was still not talkitive, still unable to state her companion in the eyes, it felt awful, but somehow she had to deal with it, and for sure the sooner, the better.