Yuusha Party ni Kawaii Ko ga Ita node, Kokuhaku shitemita.

Youki died in a traffic accident and was reborn in a fantasy world! However, instead of being the hero of legends, he ended up reincarnating into an overpowered demon. Having no desires to become the Demon Lord, he sits around in the Demon Lord's castle as a random low rank guardian. One day, the Hero's party comes to attack and on a whim he knocks out the entire hero party. Healing up the Hero party and then preparing to send them back to town, he notices the female priest and falls in love at first sight! (Source: MU)

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Read There Was A Cute Girl In The Hero'S Party, So I Tried Confessing To Her Chapter 14 - Manganelo

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Chapter 14 (English) - Yuusha Party ni Kawaii Ko ga Ita no de, Kokuhaku Shite Mita

Yuusha Party ni Kawaii Ko ga Ita node, Kokuhaku shitemita. Capítulo 14 – Mangás Chan

Light Novel Like Yuusha Ninteikan to Dorei Shoujo no Kimyou na Jikenbo

Yuusha Party ni Kawaii Ko ga Ita node, Kokuhaku shitemita.

Yuusha Party ni Kawaii Ko ga ita no de, Kokuhaku Shite Mita (Light Novel) – RinkageTranslation

Read Yuusha Party ni Kawaii Ko ga Ita no de, Kokuhaku Shite Mita Manga English [New Chapters] Online Free - MangaClash

Yuusha Party no Kawaii Ko ga ita no de, Kokuhaku Shite Mita (LN) V2 Extra (part 2/2) – RinkageTranslation

Yuusha Party ni Kawaii Ko ga Ita no de, Kokuhaku Shite Mita - MangaDex