"I still have about 2 hours before dinner. I shouldn't waste time and learn the lower rank abilities first." It would be Shin's first time learning the abilities which he had plundered. Gravity control and Arcane webs are upgraded versions of their respective skills. So they don't count.

The Lowest rank ability he has is 'Pine Shot'. That's an F-rank ability.

<strong>[ Pine Shot (F) - Can shoot pines of different sizes as per proficiency. With good control, the shape and form of Pines can be changed. ]</strong>