DANJOHI 1:5 NO SEKAI DEMO FUTSU NI IKIRARERU TO OMOTTA? GEKI JUU KANJOU NA KANOJOTACHI GA MUJIKAKU DANSHI NI HONROUSARETARA

Having arrived in a world where the male-to-female ratio is 1:5, the man Shoto tries to live an ordinary life as he did in his previous world. However, he unknowingly causes many women to fall in love with him this way, and the women develop intense feelings for him. (Source: Natalie, translated) — Description from AniList community (anilist.co).