The unnamed boy with a terminal illness whom Hahari had fallen in love with when she was a schoolgirl. Before he died, Hahari was artificially inseminated using his sperm at the age of 13, which led to the birth of Hakari. Rentarou meets his spirit after rescuing Hakari and causing Hahari to fall in love with him.

Rentarou Aijou was rejected 100 times in middle school. He visits a shrine and prays for better luck in high school. The God of Love appears and promises that he’ll soon meet 100 people he’s destined to date. But there’s a catch—once destiny introduces someone to him, the two must happily love each other. If they don’t, they’ll die. What will befall Rentarou and his 100 girlfriends in high school?
 
(Source: Crunchyroll)

Awards: 
- Most popular voice actor in the Animage Anime Grand Prix (2004)
- Best Supporting Actor at the 1st Seiyuu Awards (2007)

**Non anime roles:**

- Kamisato Ayato - Genshin Impact (Video Game)
- Otto Apocalypse - Honkai Impact 3rd (Video Game)
- Clotted Cream Cookie - Cookie Run: Kingdom (Video Game)
- Phantom - Arknights (Video Game)
- Tatsulot - Kamen Rider Kiva (Tokusatsu series)
- Luocha - Honkai: Star Rail (Video Game)

Aijou Rentaro tried and tried again, but after asking a hundred girls out on a date, he was rejected every single time. In desperation, he prays for guidance…only to be told by a god that his rejections were due to some cosmic error! Now the god is going to set things right by making sure that Aijou gets one hundred dates. Except, as things often do with gods, the dates come with a catch: one hundred girls are destined to be Aijou’s soulmate, and unless he returns their feelings each and every time, they’ll die in horrible accidents! Sure enough, girls start confessing their love to Aijou left and right. But how is he supposed to choose?! He doesn’t want to kill anyone! When he looks at each potential soulmate, it feels like a bolt of lightning. Can someone really love a hundred other people? This hilarious romantic comedy takes the harem concept to a wild extreme!
 
(Source: Seven Seas Entertainment)
 
Note: Won second place of Tsugimanga 2020 Award in the Manga Category

The second season of Kimi no Koto ga Dai Dai Dai Dai Daisuki na 100-nin no Kanojo. 
Rentaro meets new soulmates, balancing comedic chaos and heartfelt moments as his relationships deepen.
 
(Source: Crunchyroll News)

Hakari no Chichi