Suicidal manga

http://www.mangago.me/read-manga/cut/

http://www.mangago.me/read-manga/orange_takano_ichigo/
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http://www.mangago.me/read-manga/secret_alliance/?Ez3U
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http://www.mangago.me/read-manga/ingrid_the_white_deer/?IkMn
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http://www.mangago.me/read-manga/death_is_the_only_ending_for_the_villainess/
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http://www.mangago.me/read-manga/raising_a_bat/?VDds (Yaoi)
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http://www.mangago.me/read-manga/ore_higaisha/ (Yaoi)

The one that fits your request the most is “raising a bat” it’s not hetero tho