In Peropero Seduction players can newer go back to stages they have finished.
When all stages are finished they goto bonus stage

Stage	Energy per spin	Pero per spin	Boss power	Normal Girl	Normal Girl	Rare Girl	SR Girl
1-1 to 1-3	1	4-6	1000	Yukiko Hosaka	Yukie Takenouchi	Airu Shirayuki	Kotori Hinakawa
1-4 to 1-6	2	9-11	1750	Mayumi Hashigushi	Yukiko Hosaka	Airu Shirayuki	Kotori Hinakawa
1-7 to 1-9	2	9-11	2500	Nozomi Asakura	Mayumi Hashigushi	Airu Shirayuki	Kotori Hinakawa
2-1 to 2-3	3	13-17	3000?	Yukiko Hosaka	Yukie Takenouchi	1st boss 1-4	Yui Takama
2-4 to 2-6	4	18-22	4000	Mayumi Hashigushi	Yukiko Hosaka	1st boss 1-4	Yui Takama
2-7 to 2-9	5	22-28	7000	Chiho Kojima	Mayumi Hashigushi	1st boss 1-4	Yui Takama
3-1 to 3-3	4	18-22	6500	Ouka Komai	Yukie Takenouchi	2nd boss 1-4	Itsuki Akane
3-4 to 3-6	5	22-28	11000	Yuko Nonaka	Ouka Komai	2nd boss 1-4	Itsuki Akane
3-7 to 3-9	6	27-33	15000	Ouka Komai	Shiue Kitano	2nd boss 1-4	Itsuki Akane
4-1 to 4-3	5	22-28	14000	Yuko Nonaka	Ouka Komai	3rd boss 1-4	Mayuko Abe
4-4 to 4-6	6	27-33	20000	Nozomi Asakura	Yuko Nonaka	3rd boss 1-4	Mayuko Abe
4-7 to 4-9	7	31-39	30000	Ouka Komai	Nozomi Asakura	3rd boss 1-4	Mayuko Abe
5-1 to 5-3	5	22-28	50000	Yukie Takenouchi	Rio Iguchi	4th boss 1-4	Mako Fujioka
5-4 to 5-6	6	22-28	80000	Chiho Kojima	Yukie Takenouchi	4th boss 1-4	Mako Fujioka
5-7 to 5-9	7	27-33	120000	Rio Iguchi	Shiue Kitano	4th boss 1-4	Mako Fujioka
6-1 to 6-3	6	22-28	90000	Non	Rio Iguchi	1st boss 5-8	Hidemi Shoji
6-4 to 6-6	7	22-28	150000	Kaoru Sanjo	Non	1st boss 5-8	Hidemi Shoji
6-7 to 6-9	8	27-33	210000	Kaoru Sanjo	Airu Shirayuki(Rare)	1st boss 5-8	Hidemi Shoji
7-1 to 7-3	7	22-28	180000	Risa Shimozono	Rio Iguchi	2nd boss 5-8	Sora Shimada
7-4 to 7-6	8	27-33	250000	Nozomi Asakura	Risa Shimozono	2nd boss 5-8	Sora Shimada
7-7 to 7-9	9	27-33	320000	Iori Kodama	Yukie Takenouchi	2nd boss 5-8	Sora Shimada
8-1 to 8-3	8	27-33	280000	Yuko Nonaka	Iori Kodama	3rd boss 5-8	Hayako Kase
8-4 to 8-6	9	27-33	360000	Chiho Kojima	Yuko Nonaka	3rd boss 5-8	Hayako Kase
8-7 to 8-9	10	27-33	440000	Iori Kodama	Chiho Kojima	3rd boss 5-8	Hayako Kase
Bonus	10	36-44	Na	Special	Special	Special	Special

Stage 1-4 bosses:
1) Yuri Kashima
2) Sakura Shirohata
3) Hinako Nayotaka
4) Noriko Takase

Stage 5-8 bosses:
1) Hitomi Yasaka
2) Misaki Tachibana
3) Ren
4) Maiko Mikami

The rare girl in a stage is always the girl last defeded.
When each of the boss girls are defeded the player get one copy of that girls card as a gift.
Stage 6-1 to 6-3 and 6-4 to 6-6 only have 3 gift girls. I think there should be 4 girls but one of the girls has not been released yet.
At bonus stage one of the 6 cards players can pick are blank. Maybe this happens if the girl that are not in the game???

Normal girl in stage 1 to 8
1) Chiho Kojima 2-9, 5-6, 8-6, 8-9
2) Iori Kodama 7-9, 8,3, 8-9
3) Kaoru Sanjo 6-6?, 6-9?
4) Mayumi Hashigushi 1-6, 1-9, 2-6, 2-9
6) Nozomi Asakura 1-9, 4-6, 4-9, 7-6
7) Ouka Komai 3-3, 3-6, 3-9, 4-1, 4-9
8) Rio Iguchi 5-3, 5-9?, 6-3?, 7-3?
9) Risa Shimozono 7,3?, 7-6
10) Shiue Kitano 3-9, 5-9?
11) Yukie Takenouchi 1-3, 2-3, 3-3, 5-3,5-6,7-9
12) Yukiko Hosaka 1-3, 1-6, 2-3, 2-6
13) Yuko Nonaka 3-6, 4-3, 4-6, 8-3, 8-6

This are the normal girls that players can get from bonus stage.

Rare girls at bonus stage
1) Yuri Kashima
2) Sakura Shirohata
3) Hinako Nayotaka
4) Noriko Takase
5) Hitomi Yasaka
6) Misaki Tachibana
7) Ren
8) Maiko Mikami
9) Airu Shirayuki

SR girls at bonus stage
1) Kotori Hinakawa
2) Yui Takama
3) Itsuki Akane
4) Mayuko Abe
5) Mako Fujioka
6) Hidemi Shoji
7) Sora Shimada
8) Hayako Kase

In intro all players gets:
1) Kayo Shimada (Normal)
2) Airu Shirayuki (Rare)
3) Seika Aihara (SR)

Chances to get 3*gift or 3* Chance dont seems to be bigger at bonus stage than at stage 1-3, but each spin cost 10 energy at bonus stage but only 1 at stage 1-3.
Bonus stage don't seem great in anyway so players have no reason to rush to bonus stage - Players should stay in each stage untill they have obtained all girls in each stage.


All normal girls in Perupero

#	Type	Name in Japan	English name	Power at level 100	How to get
1	N-Moe	三條薫	Kaoru Sanjo	2330	Gacha, stage
2	N-Moe	竹之内雪絵	Yukie Takenouchi	2400	Gacha, stage
3	N-Moe	小島千帆	Chiho Kojima	2350	Gacha, stage
4	N-Moe	神野朱里	Shuri Kanno	2370	Gacha
5	N-Moe	朝倉のぞみ	Nozomi Asakura	2350	Gacha, stage
6	N-Moe	高澤実乃里	Minori Takazawa	2280	Gacha
7	N-Moe	比野しずえ	Shiue Kitano	2210	Gacha, stage
8	N-Moe	月島夏帆	Kaho Tsukishima	2200	Gacha
9	N-Moe	???	Minako Shino	???	???
10	N-Moe	???	Aoe Sugai	2210	Kurito
11	N-Babe	保坂ゆきこ	Yukiko Hosaka	2350	Gacha, stage
12	N-Babe	小玉衣織	Iori Kodama	2590	Gacha, stage
13	N-Babe	井口理緒	Rio Iguchi	2400	Gacha, stage
14	N-Babe	木舞桃歌	Ouka Komai	2700	Gacha, stage
15	N-Babe	嶋田佳代	Kayo Shimada	2670	Gacha
16	N-Babe	藤堂智佳子	Chikako Todo	2430	Gacha
17	N-Sexy	野中裕子	Yuko Nonaka	2730	Gacha, stage
18	N-Sexy	倉田加奈子	Kanako Kurata	2610	Gacha
19	N-Sexy	相澤美笑子	Mieko Aizawa	2440	Gacha
20	N-Sexy	下園りさ	Risa Shimozono	2860	Gacha, stage
21	N-Sexy	蝦沢千鶴	Chitzuru Ebisawa	2680	Gacha
22	N-Sexy	橋口真弓	Mayumi Hashigushi	2640	Gacha, stage
23	N-Sexy	根本百合絵	Yurie Nemoto	2620	Gacha
24	N-Sexy	相馬菜月	Natsuki Soma	2690	Gacha
25	N-Sexy	沖田千晴	Chiharu Okita	2680	Gacha
26	N-Sexy	???	Asuna Ishikura	2730	Gacha

All Rare girls in Peropero

#	Type	Name in Japan	English name	Power at level 100	How to get
1	R-Moe	高瀬則子	NorikoTakase	6410	Gacha
2	R-Moe	北川あや	Aya Kitagawa	6250	Gacha
3	R-Moe	橘美咲	Misaki Tachibana	6320	Boss 5-8
4	R-Moe	本城しおり	Noriko Takase	6090	Boss 1-4
5	R-Moe	白幡さくら	Sakura Shirohata	5650	Boss 1-4
6	R-Babe	笠谷理枝	Rie Kasatani	6210	Gacha
7	R-Babe	鴻池弓子	Yumiko Konoike	6400	Gacha
8	R-Babe	笠谷葉子	Yoko Kasatani	6990	Gacha
9	R-Babe	八坂ひとみ	Hitomi Yasaka	6620	Boss 5-8
10	R-Babe	レン	Ren	6370	Boss 5-8
11	R-Babe	鹿島ゆり	Yuri Kashima	6830	Boss 1-4
12	R-Babe	白雪愛瑠	Airu Shirayuki	7080	Gacha
13	R-Babe	鈴見夢穂	Yumeho Suzumi	6480	Gacha
14	R-Babe	山根由紀乃	Yukino Yamane	6460	Gacha
15	R-Babe	桜木ちとせ	Chitose Sakuragi	6630	???
16	R-Babe	???	Urumi Aiba	6570	Kurito
17	R-Sexy	早坂シセル	Cecil Hayasaka	6720	Gacha
18	R-Sexy	高崎真弓	Mayumi Takasaki	6280	Gacha
19	R-Sexy	鹿島あおい	Aoi Kashima	6520	Gacha
20	R-Sexy	三上麻衣子	Maiko Mikami	6590	Boss 5-8
21	R-Sexy	名代竹雛子	Hinako Nayotaka	6760	Boss 1-4
22	R-Sexy	渡部美樹	Miki Wataribe	6980	Gacha
23	R-Sexy	望月真里江	Marie Mochizuki	7270	Gacha
24	R-Sexy	花宮鈴奈	Suzana Hanamiya	6650	Gacha
25	R-Sexy	河口恵理香	Erika Kawaguchi	6620	Gacha
26	R-Sexy	井澤千瑛	Chiaki Izawa	7120	Gacha
27	R-Sexy	成瀬愛	Ai Naruse	6600	Gacha

Boss girls can also be obtained for bonus stage.

The SR girls

#	Type	Name in Japan	English name	Power at level 100	How to get
1	SR-Moe	片桐日和	Hiyuri Katagiri	11000	Gacha
2	SR-Moe	沖嶋美波	Minami Okishima	10550	Gacha
3	SR-Moe	雛川小鳥	Kotori Hinakawa	10760	Stage 1-1
4	SR-Moe	安部真優子	Mayuko Abe	10200	Stage 1-4
5	SR-Moe	嶋田空	Sora Shimada	10890	Stage 2-3
6	SR-Moe	細川千世	Chise Hosokawa	10780	Gacha
7	SR-Moe	小畑理恵	Rie Obata	10620	Login 7 days
8	SR-Babe	合原清華	Seika Aihara	11330	Gacha
9	SR-Babe	深澤未沙	Miss Fukasawa	11220	Gacha
10	SR-Babe	杉本蘭	Ran Sugimoto	11730	Gacha
11	SR-Babe	夏目ほたる	Hotsume Natsume	11760	Gacha
12	SR-Babe	高見唯	Yui Takama	11840	Stage 1-2
13	SR-Babe	藤岡まこ	Mako Fujioka	12000	Stage 2-1
14	SR-Babe	加瀬早子	Hayako Kase	11480	Stage 2-4
15	SR-Sexy	黛綾子	Ayako Mayuzumi	12430	Gacha
16	SR-Sexy	垣内紗希	SikiKakiuchi	12660	Gacha
17	SR-Sexy	串田成美	Narumi Kushida	12060	Gacha
18	SR-Sexy	古河奈菜恵	Nanae Koga	11050	Gacha
19	SR-Sexy	赤嶺いつき	Itsuki Akane	12130	Stage 1-3
20	SR-Sexy	庄司秀美	Hidemi Shoji	11760	Stage 2-2
21	SR-Sexy	牧野静香	Shizuka Makino	11210	login 7+30 days
22	SR-Sexy	黄瀬芽衣子	Meiko Kise	???	??

Stage girls can all e obtained from bonus stage.