Until the connection was cut off, Angel had not given Muse a definite answer.
Because he did not know how much longer he would remain at Black Castle. Although Sparrow Sparrow was certain she could develop the Shapeshifting Softworm, Angel did not know exactly how long it would take, and Sparrow Sparrow herself could not provide a definite timeframe.
Therefore, he did not dare give a definite answer.
However, Angel had not blocked off the possibility entirely.
Once matters at Black Castle were settled, he truly did need to make a trip to Sky Mechanical City. After all, his brother was still there. If he returned early enough, he could take on this task along the way, if only for the Research Institute points. If he could not make it in time, then there was nothing to be done.
After Muse learned this, he merely said with a smiling squint, "Then I'll look forward to your early return. As long as the New Star Tournament hasn't ended, I'll reserve a spot for you in this task. Consider it a benefit for joining the Research Institute~"
After leaving the signal tower, Lady Kimberly kept talking with Angel about the Research Institute and Muse.
However, Angel did not know much about the Research Institute either. As for Muse, he knew even less. The only member of the Research Institute he was familiar with was the potion master Midora, which was worlds apart from the mechanical alchemy Kimberly wanted to know about.
Angel understood her urgency. The alchemical inheritance Kimberly had obtained was alchemical technology from a thousand years ago.
Ancient technology did not necessarily mean good technology.
When wizard civilization was in decline, the older something was, the better it might be. But wizard civilization was now developing with dazzling brilliance, clearly