User blog comment:Crimson and Darkness/Volume 24 discussion blog/@comment-30924344-20171122121956

Issei's new breast technique, it's called this from what I got:

Super/Ultra Breast Wave Cannon (Neutron Beam Cannon)

Issei connects the tail part of his armour to the breasts to absorb their energy, and when absorption is complete, the bust size is displayed in the armour's jewels so since he used it on Rossweisse, the number displayed is 96. Continuous use is difficult because the energy once absorbed becomes temporary, but the power increases in proportion to the bust size (so the power output here from Rossweisse is 96), and it is said it's power would be tremendous if the bust size is 3 digits. So if he used it on Akeno, it would be very powerful.