Hi bro. 

The reading furigana of the chapter name in japanese is ライバル - RAIBARU - RIVAL. Koutekishuu ( (こう) (てき) (しゅ) ?) is the reading of the Kanjis, but the author changed to ライバル, then RAIBARU is the correct romanized name. Just check the Chapter cover image.

Upgferreira (talk) 16:33, February 16, 2020 (UTC)

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