Introduction[]
The Seven Celestial Sages intervened after Hinata had finally reconciled with Rimuru. using Disintegration, which moves at the speed of light, to decimate every single person there. Raphael revealed that she had actually copied Beelzebuth before it was erased, and Rimuru used it to fend against the light ray of Disintegration before it was too late. (Volume 7 / Chapter 96)
Calculation[]
Menton-Crinion: 4 px | 0.166 m
Panel Height: 420 px
Distance from Sages to Rimuru: 0.166 * 420/[4*2*tan(70deg/2)] = 12.446 m
Hinata: 108 px | 1.6 m
Rimuru's Hand: 28 px | 0.414 m
Distance Beelzebuth traveled: 544 px | 8.06 m
Distance the ray moved before getting eaten: 12.446 m - 8.06 m = 4.386 m
Timeframe: 4.386 / 299792458 = 1.46301212e-8
During those fraction of second, Rimuru bring his arm up for about 45 degree or more.
Distance of arm: 0.414 x 45 deg = 0.325 m
Speed: 0.325 / 1.46301212e-8 = 2.2214443e+7 m/s (7% SOL)
Results[]
Rimuru's perception speed: 1.46301212e-8 s (Relavistic)
Rimuru's movement speed: 2.2214443e+7 m/s (Sub-Relavistic+)
Wasn't expecting the results to be this low, but this does make sense considering the amount of lowball in this calculation. Ang-sizing from this picture would give a greater distance than neccesary since the pov camera is significantly above the spell which then will lower the result. Rimuru wasn't moving his arm from the moment the spell was used against him, but rather when the rays are this far. Due to the unknown consistent size of the ray this is impossible to quantify, all we know that its should be less than 4 meter. Therefore, this calculation is lowballed.