Adept and so on also affects spirit special based weapons.
7.5% of current tp per hit instead of 20% of current tp with 1 adept and MG+.
A fonewn with max tp from tp mats and mst at 1500 has about 2798 tp to spend on Guardianna's 3rd hits. Granted spirit takes a % of current tp not a % of max but still, that face nuke lasts a while with MG+ on just itself.