“Leveling up” in Japanese
Short answer
Leveling up in Japanese is “レベル上げ” (reberuage). Full meaning: leveling up (one's character, etc.), grinding for levels.
Other ways to say “Leveling up” in Japanese
レベルアップ
reberuappu leveling up, raising the level (of), boosting, improving, improvement, rising to the next level
整置
seichi arrangement, leveling up, alignment, adjustment
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