I disagree because my instincts tell me that will never happen. With how the plot is going, you can more or less guess such an extremely complicated plot twist won't happen. And Aina has also shown no sign of it. You should know that even if MC is dumb just like you say (to tell the truth, you are being too extreme. MC's not dumb. If I say so, I would even say that he is cunning and smart. You are not seeing what's in front of you and asking for something you just thought of.) we should at least see signs of Aina's slightly strange expressions. There are none so I'm 100% sure mother ship is fucking dead for goodness sake.
Sorry about my badmouthing at the last sentence. I got a little sensitive.
if you are usato then yes you can, but this shota is not usato, first of all usato has built his physique to then use healing magic for recovery, but this shota's magic are the physical enhancement which enhance the physique, and the recovery just speeding cell restoration and the speed is also slow unlike healing magic who give instant recovery, and don't forget about the drawback that will strain the body, and above all none can't withstand the bombing magic. In other words, if he doesn't learn and utilize a very useful combat skill, then he can't be op like usato