EO1/Ronin/Skills

This page details full data for the Ronin's skills in Etrian Odyssey. A character can Boost active skills, which add 5 levels to the skill while keeping the same TP Cost.

Note that "ATK Increase" and "STR Increase" are distinct variables in damage calculation. See the damage formula for details.

Skill Tree

Katanas branch

Katana Mastery (Katanas) 刀マスタリー
Mastery Skill Increase katana damage. Needed to learn katana skills.
Level	1	2	3	4	5	6	7	8	9	10
ATK Increase	10%	11%	12%	13%	19%	20%	21%	22%	23%	30%

Kesagiri 踏み袈裟
Katana Skill Katana skill of stepping forward while slicing. Body part used: Legs Stat(s) used: STR Prerequisite skill(s): Katana Mastery, lv. 1
Level	1	2	3	4	5	6	7	8	9	10
TP Cost	4		5		6
Damage	130%	135%	140%	145%	150%	155%	160%	165%	170%	180%
Hit Rate	120%
Activation Speed	50%
Level	11	12	13	14	15
TP Cost	6
Damage	185%	190%	195%	200%	210%
Hit Rate	120%
Activation Speed	70%

Overhead skills

Overhead 上段の構え
Overhead Skill Temporary Overhead stance that increases attack and defense. Buff lasts for 5 turns. Bug in Etrian Odyssey: Does not benefit from Boost barring increased activation speed. Prerequisite skill(s): Katana Mastery, lv. 3
Level	1	2	3	4	5	6	7	8	9	10
TP Cost	2		3		4
ATK Increase	10%	11%	12%	13%	19%	20%	21%	22%	23%	30%
DEF Increase	5%	6%	7%	8%	9%	10%	11%	12%	13%	15%
Activation Speed	100%
Level	11	12	13	14	15
TP Cost	4
ATK Increase	31%	32%	33%	34%	42%
DEF Increase	16%	17%	18%	19%	22%
Activation Speed	120%

Zamba 斬馬
Overhead Skill Strong katana slice from the Overhead stance. Body part used: Arms Stat(s) used: STR Prerequisite skill(s): Katana Mastery, lv. 5 Overhead, lv. 1
Level	1	2	3	4	5	6	7	8	9	10
TP Cost	4		5		6
Damage	140%	145%	150%	155%	165%	167%	170%	173%	176%	190%
Hit Rate	120%
Activation Speed	50%
Level	11	12	13	14	15
TP Cost	6
Damage	192%	194%	196%	198%	216%
Hit Rate	120%
Activation Speed	70%

Midareba ツバメがえし
Overhead Skill Repeated katana slashes from the Overhead stance. Body part used: Arms Stat(s) used: STR Prerequisite skill(s): Katana Mastery, lv. 7 Overhead, lv. 3
Level	1	2	3	4	5	6	7	8	9	10
TP Cost	8	9	10	11	12
Damage per Hit	100%	103%	106%	109%	115%	116%	117%	118%	119%	125%
Number of Hits	2									3
Total Damage	200%	206%	212%	218%	230%	232%	234%	236%	238%	375%
Hit Rate	120%
Activation Speed	50%
Level	11	12	13	14	15
TP Cost	12
Damage per Hit	126%	127%	128%	129%	135%
Number of Hits	3
Total Damage	378%	381%	384%	387%	405%
Hit Rate	120%
Activation Speed	70%

Orochi 卸し焔
Overhead Skill Execute a fire katana strike from the Overhead stance. Body part used: Arms Stat(s) used: STR, TEC Prerequisite skill(s): Katana Mastery, lv. 10 Overhead, lv. 5
Level	1	2	3	4	5	6	7	8	9	10
TP Cost	6	7	8	9	10
Damage (Physical)	130%	131%	132%	133%	134%	135%	136%	137%	138%	140%
Damage (Fire)	50%	55%	65%	70%	75%	80%	85%	90%	95%	100%
Hit Rate	120%
Activation Speed	20%
Level	11	12	13	14	15
TP Cost	10
Damage (Physical)	141%	142%	143%	144%	150%
Damage (Fire)	105%	110%	115%	120%	125%
Hit Rate	120%
Activation Speed	40%

Seigan skills

Seigan 上青眼の構え
Seigan Skill Temporary Overhead stance that increases attack and defense. Buff lasts for 5 turns. Bug in Etrian Odyssey: Does not benefit from Boost barring increased activation speed. In Etrian Odyssey HD: ATK Increase is 13% at level 9. Prerequisite skill(s): Katana Mastery, lv. 3
Level	1	2	3	4	5	6	7	8	9	10
TP Cost	2		3		4
ATK Increase	0%	1%	2%	3%	9%	10%	11%	12%	23%	20%
DEF Increase	15%	16%	17%	18%	19%	20%	21%	22%	23%	25%
Activation Speed	100%
Level	11	12	13	14	15
TP Cost	4
ATK Increase	21%	22%	23%	24%	32%
DEF Increase	26%	27%	28%	29%	32%
Activation Speed	120%

Mikiri 一寸の見切り
Seigan Skill Deflect the enemy attack with a katana from the Seigan stance. Nullifies all enemy attacks to the Ronin this turn. This skill can be Boosted to no improvement. Body part used: Arms Stat(s) used: STR Prerequisite skill(s): Katana Mastery, lv. 5 Seigan, lv. 1
Level	1	2	3	4	5	6	7	8	9	10
TP Cost	10	9	8	7	6	5	4	3	2	1
Level	11	12	13	14	15
TP Cost	1

Koteuchi 小手討ち
Seigan Skill Immobilize an enemy's arm with a katana from the Seigan stance. Body part used: Arms Stat(s) used: STR, LUC Prerequisite skill(s): Katana Mastery, lv. 7 Seigan, lv. 3
Level	1	2	3	4	5	6	7	8	9	10
TP Cost	4		5		6
Damage	130%	131%	132%	133%	134%	135%	136%	137%	138%	140%
Arm Bind Infliction Rate	20%	21%	22%	23%	29%	30%	31%	32%	33%	40%
Hit Rate	120%
Activation Speed	50%
Level	11	12	13	14	15
TP Cost	6
Damage	141%	142%	143%	144%	150%
Arm Bind Infliction Rate	41%	42%	43%	44%	52%
Hit Rate	120%
Activation Speed	70%

Raizuki 雷耀突き
Seigan Skill Execute a volt katana strike from the Seigan stance. Body part used: Arms Stat(s) used: STR, TEC Prerequisite skill(s): Katana Mastery, lv. 10 Seigan, lv. 5
Level	1	2	3	4	5	6	7	8	9	10
TP Cost	6	7	8	9	10
Damage (Physical)	130%	131%	132%	133%	134%	135%	136%	137%	138%	140%
Damage (Volt)	50%	55%	65%	70%	75%	80%	85%	90%	95%	100%
Hit Rate	120%
Activation Speed	20%
Level	11	12	13	14	15
TP Cost	10
Damage (Physical)	141%	142%	143%	144%	150%
Damage (Volt)	105%	110%	115%	120%	125%
Hit Rate	120%
Activation Speed	40%

Iai skills

Iai 居合の構え
Iai Skill Temporary Iai stance that increases speed. Buff lasts for 5 turns. Bug in Etrian Odyssey: Does not benefit from Boost barring increased activation speed. Prerequisite skill(s): Katana Mastery, lv. 3
Level	1	2	3	4	5	6	7	8	9	10
TP Cost	2		3		4
AGI Increase	10%	11%	12%	13%	19%	20%	21%	22%	23%	30%
Activation Speed	100%
Level	11	12	13	14	15
TP Cost	4
AGI Increase	31%	32%	33%	34%	42%
Activation Speed	120%

Kubiuchi 首討ち
Iai Skill Chance of an instant kill from the Iai stance. Body part used: Arms Stat(s) used: STR, LUC Prerequisite skill(s): Katana Mastery, lv. 5 Iai, lv. 1
Level	1	2	3	4	5	6	7	8	9	10
TP Cost	4		5		6
Damage	130%	131%	132%	133%	134%	135%	136%	137%	138%	140%
Instant Kill Rate	40%	41%	42%	43%	49%	50%	51%	52%	53%	60%
Hit Rate	120%
Activation Speed	100%
Level	11	12	13	14	15
TP Cost	6
Damage	141%	142%	143%	144%	150%
Instant Kill Rate	61%	62%	63%	64%	72%
Hit Rate	120%
Activation Speed	120%

Gatotsu 貫突
Iai Skill Extremely powerful, lightning-quick katana stab. In Etrian Odyssey: Despite the description, inflicts cut damage. In Etrian Odyssey HD: Inflicts stab damage. Body part used: Arms Stat(s) used: STR Prerequisite skill(s): Katana Mastery, lv. 7 Iai, lv. 3
Level	1	2	3	4	5	6	7	8	9	10
TP Cost	4		5		6
Damage	170%	171%	172%	173%	189%	190%	191%	192%	193%	210%
Hit Rate	120%
Activation Speed	100%
Level	11	12	13	14	15
TP Cost	6
Damage	211%	212%	213%	214%	232%
Hit Rate	120%
Activation Speed	120%

Hyosetsu 抜刀氷雪
Iai Skill Execute an ice katana strike from the Iai stance. Body part used: Arms Stat(s) used: STR, TEC Prerequisite skill(s): Katana Mastery, lv. 10 Iai, lv. 5
Level	1	2	3	4	5	6	7	8	9	10
TP Cost	6	7	8	9	10
Damage (Physical)	130%	131%	132%	133%	134%	135%	136%	137%	138%	140%
Damage (Ice)	50%	55%	65%	70%	75%	80%	85%	90%	95%	100%
Hit Rate	120%
Activation Speed	20%
Level	11	12	13	14	15
TP Cost	10
Damage (Physical)	141%	142%	143%	144%	150%
Damage (Ice)	105%	110%	115%	120%	125%
Hit Rate	120%
Activation Speed	40%

ATK Up branch

ATK Up ＡＴＫブースト
Stat Increase Increase physical damage.
Level	1	2	3	4	5	6	7	8	9	10
STR Increase	10%	11%	12%	13%	19%	20%	21%	22%	23%	30%

Sight 無明の極
Stat Increase Increase attack damage at night or when blinded. Also applies while the user's head is bound. Prerequisite skill(s): ATK Up, lv. 3
Level	1	2	3	4	5	6	7	8	9	10
STR Increase	10%	11%	12%	13%	19%	20%	21%	22%	23%	30%

Crit Up 一閃ブースト
Passive Skill Increase chances of critical attacks. Prerequisite skill(s): ATK Up, lv. 5
Level	1	2	3	4	5	6	7	8	9	10
Critical Rate Increase	1%	2%	3%	4%	5%	6%	7%	8%	9%	10%

Other skills

HP Up ＨＰブースト
Stat Increase Increase maximum HP.
Level	1	2	3	4	5	6	7	8	9	10
MAX HP Increase	10%	11%	12%	13%	19%	20%	21%	22%	23%	30%

Ibuki 息吹
Healing Skill Heal HP by taking a deep breath. Body part used: Head Prerequisite skill(s): HP Up, lv. 3
Level	1	2	3	4	5	6	7	8	9	10
TP Cost	3		4		5
Fixed HP Recovery	20	26	32	38	50	56	62	68	74	92
Activation Speed	70%	72%	74%	76%	80%	82%	86%	88%	90%	96%
Level	11	12	13	14	15
TP Cost	5
Fixed HP Recovery	98	104	110	116	140
Activation Speed	98%	100%	102%	104%	112%

TP Up ＴＰブースト
Stat Increase Increase maximum TP.
Level	1	2	3	4	5	6	7	8	9	10
MAX TP Increase	10%	11%	12%	13%	19%	20%	21%	22%	23%	30%

Mine 採掘
Search Skill Mine for materials at mining points.
Level	1	2	3	4	5	6	7	8	9	10
Item Chance Multiplier	×1.00	×1.02	×1.04	×1.06	×1.10	×1.11	×1.12	×1.13	×1.14	×1.20
Daily Attempts	2	4	6	8	10	12	14	16	18	20

References

• Etrian Odyssey Skill simulator
• Etrian Odyssey atwiki (Japanese) - Ronin Page