Kokoro is a middle student of St. Gradius Academy, but her life is somewhat bothersome since her family really wants her to finish up education, graduate and become a top-notch vampire hunter just the same as her classmate Gesshi Hanafuuma seeks to become a demon-slaying samurai warrior here in the modern-day world. The Squadron really does not know much about her lineage except for what has been told to them, but they become friends with Kokoro all the same right from the start.
She is voiced by Hitomi Harada.
Kokoro's initial weapon set is very tricky to use effectively, and is based from weapons seen in the Castlevania series.
The Holy Water is Kokoro's missile weapon which consists of an explosive bottle of holy water that is tossed out in front of the Stavros and then drops, producing a watery burst for a short time when it hits either the ground or an enemy. When this weapon is used at level 2, there is still only bottle of water tossed, but the drop speed of the bottle and the strength of the weapon is increased.
The Beam Cross is Kokoro's laser weapon. It works very similarly to the Reflex Ring double weapon, just with a longer range (and shot delay) and it is also smaller. Level 2 for this weapon comes at Virtues Lv 1, but unfortunately, the only change is an increase in both the projectile's range and its strength. Even at Level 3 there is only a single cross.
The Axe is Kokoro's double weapon and it works just like its Castlevania incarnations with an axe projectile going in a set parabolic arc. Although it is tough to effectively use the weapon with its specific path and shot delay, the effort spent mastering it is rewarded as the Axe does massive damage. As a piercing weapon, it is able to go through enemies and terrain. Against bosses, Axe 1 should take no more than three hits to destroy a barrier and a core takes about four hits on average to be destroyed (both of these statistics are boss-dependent). At Levels 2 and 3, the Axe's firing rate, strength and number of projectiles on-screen per shot increases.
The final exclusive weapon in the set is Kokoro's signature special weapon, the Beam Whip. This weapon consists of a continuous pink laser emitted by the Stavros that moves with it, leaving a trail that goes across the screen in the process. This gives the weapon rather good coverage on the screen for taking out all of the lesser, formation enemies. Such overall ease of use, however, comes with a price in that the Beam Whip has low strength, and is therefore not effective on armored enemies, barriers and bosses at its initial power. Once enough experience is gained with Kokoro and the weapon has its higher levels unlocked, the Beam Whip is a much more effective weapon and cheap to maintain at such levels.
Now we come to Kokoro's lone, miniature Trigon for her Option. It is a unique Option which works like none that have come before it. This Trigon unit moves opposite of the player's movement, and it will not shoot any of the weapons selected. To make up for this, it can level up and these levels stay until the player loses a life. The Trigon unit fires a normal shot to start, a rapid white star projectile that comes out the front and back simultaneously at Level 2 and lastly a base Twin Laser firing front and back at level 3.
The last thing to mention is Kokoro's Platonic Break, the Lightning Sword. Those who have played shmups for a long time need only look at the name Trigon (or Lightning Fighters in the U.S.) to know from whence it came. Then again, that game's ship was the inspiration for Deltatry in the boss rush of Gradius Gaiden, and the same laser attack is used by it; most of us are more likely to have seen the attack there first.
S = Speed
B = Beam Whip
M = Holy Water
L = Beam Cross
D = Axe
O = Trigon
? = Force Field
Platonic Break = Lightning Sword
- Kokoro Belmont is the first Otomedius character who based from a non-shmup Konami games.
- Kokoro Belmont is created by Koji Igarashi, known as the producer of the Castlevania series who also his last producer in Otomedius Excellent and Konami itself before he transfer to another gaming company today; however, character designer Mine Yoshizaki joints their collaboration of designing Kokoro's original appearance.
- This is the first Otomedius character to have a tomboy appearance.
- This is the fourth Riding Viper for customization of Vic Viper T-301s; processed by Arnval, Strarf and Aoba Anoa.
- Kokoro is the first squadron that has a weapon props in the series, proceeding by Gesshi Hanafuuma.
- Kokoro's DLC BGMs are based from multiple Konami video games, featuring Castlevania, Trigon, A-JAX and Flak Attack.
- Kokoro's BGM Pack composer, Michiru Yamane is also work tons of Castlevania soundtracks including several Konami shmps games like Nemesis 3 and Detana!! Twinbee
- The named Stavros, which is the Greek word for "cross".
- In the ending credits, Kokoro is facing towards Dracula's Castle is literally inspired from a poster of the first Castlevania game.
- Kokoro's sub weapon, the Holy Water is also based from Castlevania Symphony of the Night.
- Even though her suit is decorated with Iron Crosses in design, it is not related to the 1945 Strikers series like most people were thinking, because Konami did not make those games.
- Her Trigon unit is a mini version of the player ship from the original Trigon (Lightning Fighters in the U.S.) game which in turn inspired Deltatry in Gradius Gaiden.
- Kokoro's Axe weapon has the most damage per single projectile in Otomedius Excellent.
- Kokoro is a Belmont by name and blood descent. With the timeline presented, it might be assumed that Julius Belmont is her father, but there is no current evidence to suggest this. Regardless, whatever relation Kokoro's whip has to the famed Vampire Killer whip is not known, but it is assumed to be a derivative from that one.