User blog:FateAlbane/S. Klaus invades house, gets cornered by Tree in wait for ambush

Santa and the X-mas tree fight to the deat---'k, seriously now.

This is a feat from the (to be translated) short story, Bewitching Bloody Branch (or if you like looking at Kanji just because, 妖艶な血まみれの枝 - Yōen'na chimamire no Eda). Happens pretty early too.

Summary
Sebastian Klaus is being pursued by Tsubaki Roswhita, an youkai tree that *he* was supposed to find and kill. He succeeded in the first part but found himself not quite up to the task in the second.

Before he can become fertilizer though, he freezes the whole house of concrete, foundations and everything to -100° C. After this he proceeds to blast her with it as he now has Umiiruka into play "field boost".

Calc
Using the formula E= m * c * ΔT we can get the tier for this. Where E is energy, m is mass, c is the heat capacity and ΔT is the Heat Change.

Searching for the average weight of a house I got an estimaate of 345 000 pounds which is 156489 kg. House was made of Concrete, which has a specific heat capacity of 1000 (for the sake of simplicity I'll ignore the furniture and however else was inside to share the house's fate).

Google tells me "for scientific work, room temperature is taken to be about 20 to 25 degrees Celsius with an average of 23 °C", I'll just go with 20. 20 to - 100 is naturally a change of 120° soo...

E= m * c * ΔT E= 156489 * 1000 * 120 = 18778680000 J or 4,49 tons of TNT.

Which is High 8-C/Large Building Level.

General Impression
Assuming this result is legitimate, it would make sense as Sebastian is a far cry from any trainees, beginners and even well-trained adventurers - but nowhere near the 7-B veterans. Given that building wrecking is something that will start happening from the second arc onwards, this doesn't scale to anyone who currently has a profile, but would serve as the basis for many future ones and second arc keys.