GachaPlan

Blue Archive JP sometimes runs two independent pick-up recruitments at the same time, and this page is built for exactly that situation. Starting from the player's current call charge plus their blue-crystal and recruitment-ticket stock, it works out which banner to aim at first, the probability of getting both students, the maximum resources the worst case would demand, and what to do next.

The model follows the officially announced rules it names: a 50% chance at 100 charges, a guaranteed pick-up at 200, and a reset once the target pick-up is obtained. The page is equally clear about what it leaves out, stating that it does not include the chance of an off-banner pick-up appearing through the normal rate, and that banner formats carrying several pick-up targets at once are outside the model.

Guidance sits next to the numbers: a section on deciding the pull order, a warning not to switch banners in the middle of a ten-pull, and an FAQ that addresses what happens to the charge after the first character is pulled and whether the results guarantee actual drops. The site notes the figures are estimates based on official announcements and that independent final confirmation is not complete. It is labelled an unofficial tool and its interface and text are in Japanese.