BUR #6903 has been approved by @nonamethanks.
rename jahy_sama_wa_kujikenai -> jahy-sama_wa_kujikenai!
The "sama" is an honorific "-sama", and we almost always whack a hyphen before these. Example tags with "-sama" .
MAL also spells it with the hyphen.
As for the exclamation mark, the full title 『ジャヒー様はくじけない！』 has the ! and we usually preserve those in titles. MAL also preserves the exclamation mark (in both the romaji transliteration and the translated English title).