"First, the fifteen defensive magics in this room. The twelve that we can see, one that dad mentioned, and then the two that are conditional.
The condition to trigger them is most probably in case of a sudden energy burst or a powerful attack.
The two spells would even resonate with each other when triggered and the barrier that would appear from them would be a spell close to (tier-8) earth attribute, metal type, and adamantine-444 variant.
And that spell... is flawless.
Two from Alf, three from the second uncle, four from Rein and dad, eight from you... and seven from me." Why does this room even have this much defensive magic?
This was a dining hall, lol.
But Rein's grandma is really something else~.
"You are an awesome Rein's grandma... I can't even think of the level of control you have on your Mana to be able to cast this sophisticated spell on the entire room that covers not only the walls or something but everything.