I'm so, so sorry I didn't add on-screen romaji - I will when my laptop is fixed. On top of that I'm uploading this on the family account, so it's probably not going to stay. I just needed this on youtube for right now so it's not really for anyone else. I swear I'll add lyrics (and a link to the new video) as soon I can. If you can read/sing to kana/furigana, though, then you're fine.
Lyrics:
Aah
Warui koto wa shicha ikenai yo
Ikenai koto suru to tsurete kareru
Warui koto wa shicha ikenai yo
Tonari no kodomo ga tsukamatta n'da yo
Warui koto wa shicha ikenai yo
Ikenai koto suru to tsurete kareru
Warui koto wa shicha ikenai yo
Tonari no kodomo ga tsukamatta n'da yo
Gakkou no kaeri michi
Himitsu kichi ni itta toki mo
Okaa-san wa ookii tsubo ni
Kakurete ushiro o tsuite kita no
Otou-san wa shiranai ouchi no
Yane no ue kara watashi o toru no
Sono shita de shinda ojii-chan ga
Kocchi o mi nagara utatteru
Himitsu kichi no shita kara
Onee-chan ga hanashi kakeru no de
Doro ni mimi o atetara
Mimi ga tsumatte kikoenai
Aah
Warui koto wa shicha ikenai yo
Ikenai koto suru to tsurete kareru
Warui koto wa shicha ikenai yo
Tonari no kodomo ga kiete shimatta no
Warui koto wa shicha ikenai yo
Ikenai koto suru to tsurete kareru
Warui koto wa shicha ikenai yo
Tonari no kodomo ga kiete shimatta no
Byouin no kaeri michi Ohakamari ni itta toki mo
Onii-san ga shiranai hito tachi ni
Kakurete ato kara tsuite kuru
Sabishii ohaka no shita ni wa warui kodomo tachi ga ite
Minna de keitai denwa ni Watashi no DEETA o okutteru
Mainichi kodomo tachi ni Ai ni kite wa hanashi kakeru no de
Watashi wa ii hito dakara tsurete ikareru koto wa nai no
Aah
Warui koto wa shicha ikenai yo
Ikenai koto suru to kiechau no
Warui koto wa shicha ikenai yo
Kieta no wa tonari no kodomo no hazu
Warui koto wa shicha ikenai yo
Ikenai koto suru to kiechau no
Warui koto wa shicha ikenai yo
Kieta no wa tonari no kodomo no hazu